There is a strange thing about the SEO industry. The people who work in it have built up, over twenty years, a private vocabulary so extensive that conversations between professionals can sound like a different language entirely. And the worst part is that many of them have forgotten that the rest of the world does not speak this language. They will tell you, with complete confidence, that you need to "improve your E-E-A-T signals to win citations in the SERPs," and they will be slightly puzzled when you do not immediately know what that means.
I think this is unfair to business owners. The concepts behind these terms are not actually difficult. What is difficult is the language. So here is what I would offer to any business owner who wants to understand what their marketer, agency, or AI assistant is talking about — twenty-five essential terms, defined in plain English, with a brief note on why each one matters for your business.
If you read this once carefully, you will understand probably 90% of what anyone in the SEO world says to you. And the remaining 10% you can safely ignore.
The foundational terms
1. SEO (Search Engine Optimization). The practice of making your website more likely to appear when people search for things related to your business. SEO is the umbrella term that contains almost everything else on this list. It is not a single technique — it is a collection of techniques, all aimed at the same goal: more visibility in search.
2. GEO (Generative Engine Optimization). The newer cousin of SEO. Where SEO optimizes for traditional search engines like Google, GEO optimizes for AI tools like ChatGPT, Perplexity, and Google's AI Overviews. The basic idea is similar — make your content findable and trustworthy — but the specific tactics differ in important ways. GEO is what you do to get cited inside an AI-generated answer, not just clicked from a list of links.
3. SERP (Search Engine Results Page). The page Google shows you after you type a query. The SERP used to be a simple list of links. Today it is a much more complex page with multiple kinds of content — ads, the Map Pack, AI Overviews, featured snippets, image results, video results, and finally the traditional blue links. Understanding what kind of result your customers see for the queries that matter to your business is the starting point of any SEO strategy.
4. Keyword. A word or phrase that people type into a search engine. Keywords are how you map customer intent to your content. The art of SEO has always been understanding which keywords your customers use, in what context, and what they actually want when they use them. Modern search has moved far beyond simple keyword matching, but the concept remains useful.
5. Search intent. What the person actually wants when they type a query. Someone searching "best Italian restaurant Portland" wants to choose a restaurant. Someone searching "how to make Italian wedding soup" wants a recipe. Same general topic, completely different intents. Modern SEO is more about matching intent than matching keywords.
On-page basics
6. Title tag. The title that appears at the top of your browser tab and as the headline in Google search results. The title tag is one of the most important on-page SEO elements — it tells both Google and the user what the page is about. A weak title tag is one of the most common reasons good content fails to get clicks.
7. Meta description. The short paragraph that appears under your title in Google search results. It does not directly affect your ranking, but it heavily affects whether people click. Think of it as the back-of-the-book blurb for your page.
8. H1 (and H2, H3, etc.). The hierarchical headings on your page. The H1 is the main page title, the H2s are major sections, the H3s are sub-sections, and so on. Clear heading structure helps both search engines and readers understand your content. AI search engines are particularly attentive to heading structure when deciding what to cite.
9. Alt text. A short description of what an image shows, written for search engines and for screen readers used by visually impaired visitors. Good alt text is part accessibility, part SEO. It should describe the image accurately rather than stuffing keywords.
10. Schema markup (structured data). A standardized way of labeling content on your website so search engines can understand it more precisely. Without schema, Google has to guess that the number "503-555-1234" on your contact page is a phone number. With schema, you tell it explicitly. Schema is one of the most underused tools in small business SEO and one of the most important for AI search.
Authority and trust
11. Backlink. A link from another website to yours. Backlinks have been the foundation of Google's ranking algorithm since the beginning, on the theory that other sites linking to you is a vote of confidence. Not all backlinks are equal — a link from a respected industry publication is worth far more than a link from a random directory.
12. Domain Authority. A score, invented by SEO tool companies (not Google), that estimates how strong a website's overall backlink profile is. Domain Authority is not an official Google metric, but it is a useful shorthand for "how powerful is this site." Higher is better, generally speaking.
13. E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness). Google's framework for evaluating the quality of content. It originally stood for E-A-T and Google added the second E (Experience) in 2022. The basic idea: Google wants to surface content from sources that have actual experience with the topic, demonstrated expertise, recognized authority, and a track record of trustworthiness. E-E-A-T matters even more in the AI search era, because AI systems use the same kinds of signals when deciding whom to cite.
14. YMYL (Your Money or Your Life). Content categories where bad information could genuinely harm someone — finance, health, legal, safety. Google holds YMYL content to a much higher quality standard. If your business is in one of these categories, expect more scrutiny from Google's algorithms and pay extra attention to your E-E-A-T signals.
Local SEO terms
15. Google Business Profile (formerly Google My Business). The free Google listing that lets you appear in Google Maps, the Map Pack, and local search results. For any business with a physical location or service area, your Google Business Profile is probably the single most important asset in local SEO. Claim it, complete it, and keep it accurate.
16. Map Pack (also called Local Pack or 3-Pack). The box of three local business results, with a small map, that Google shows for local-intent queries like "plumber near me." Appearing in the Map Pack is enormously valuable for local businesses. Most clicks for local queries go to one of the three Map Pack listings, not the regular results below.
17. NAP (Name, Address, Phone). Your business's Name, Address, and Phone number, exactly as they appear across the web. Consistency matters — Google uses NAP consistency across directories, your website, and your Google Business Profile as a trust signal. If your address is "123 Main St" in one place and "123 Main Street" in another, you are weakening your local SEO without realizing it.
18. Citations. Mentions of your business name, address, and phone number on other websites, even without a link. Local directories, chamber of commerce listings, industry associations — all of these count. Citations help Google verify that your business is real and consistent.
19. Service area. The geographic region your business serves. For businesses without a public storefront — plumbers, electricians, mobile services — your service area is what Google uses to decide which "near me" searches you should appear for.
AI search and modern terms
20. AI Overviews. The AI-generated summary that appears at the top of certain Google search results. AI Overviews answer the user's question directly, using information synthesized from multiple sources, with citations. The rise of AI Overviews is the single biggest change in how Google delivers answers, and being cited in them is a major new SEO goal.
21. Google AI Mode. The newer, more ambitious version of AI Overviews — a separate, conversational search interface where the AI does most of the work and traditional links are supplementary. AI Mode is rolling out gradually and is likely to become a major part of how customers interact with Google over the next few years.
22. Zero-click search. A search that ends without the user clicking through to any website. AI Overviews, featured snippets, and Knowledge Panel results all contribute to zero-click searches. The percentage of searches that end without a click has been rising for years and is now the majority for many query types.
23. Featured snippet. A boxed answer that appears at the top of Google results, pulled directly from one website's content. Featured snippets are the original "zero-click" feature — they often answer the user's question completely without requiring a click. Winning a featured snippet is still valuable, even though AI Overviews are taking some of their share.
24. Crawling and indexing. Two distinct steps in how Google handles your site. Crawling is when Google's bots visit your pages to read them. Indexing is when Google adds those pages to its searchable database. A page can be crawled but not indexed — and if it is not indexed, it cannot appear in any search result. Many small business sites have indexing problems they do not even know about.
25. Core Web Vitals. Google's set of measurements for how well your website performs from the user's perspective — how quickly the page loads, how stable the layout is as it loads, and how responsive it is to user interaction. Core Web Vitals are a real ranking factor, and they also affect whether visitors stick around long enough to convert. Slow, jumpy websites lose customers regardless of how good their content is.
What to do with all of this
You do not need to memorize this list. You need to refer back to it when someone uses a term you do not understand. The goal is not to become an SEO expert — it is to become a business owner who can have a real conversation with one, ask the right questions, and recognize when someone is selling you nonsense.
Here is my honest recommendation. Read this glossary once carefully. Bookmark it. The next time someone in marketing uses a term that makes you nod politely while feeling lost, come back here. Look it up. Within a few weeks, the vocabulary will start to feel natural, and you will find that the SEO world is much less mysterious than the people working in it sometimes make it seem.
If you are looking for an even more complete reference — every term you might encounter, organized for easy lookup — we maintain a full glossary at Licheo Glossary. It is free, it is comprehensive, and it is written in the same plain-English spirit as this list.
And if you want to see how your own business currently performs across the things these terms describe — your on-page SEO, your local SEO, your AI search readiness, your technical foundation — run a free assessment at Licheo SEO Standings. You will get a clear, prioritized picture of where you stand and what to fix first. No marketing jargon, no upsell, just an honest look at your current standing.
The truth is, the SEO world has made itself more complicated than it needs to be. Once you understand the basic vocabulary, the underlying ideas reveal themselves to be largely common sense — make a useful website, demonstrate real expertise, be findable, be trustworthy. Everything else is detail.