SEO & Digital Marketing Glossary
Clear, jargon-free definitions of the SEO, paid search and AI search terms our team uses every day, each with examples, best practices and answers to the questions people actually ask. Think of it as an SEO dictionary: plain-English SEO terms and search engine marketing terms, each with a full definition.
SEO fundamentals
9 termsGoogle’s free business listing, formerly Google My Business, shown in Google Search and Google Maps.
Read definition → GGoogle HummingbirdGoogle’s 2013 rewrite of its core search algorithm, built to understand the meaning of a whole query.
Read definition → GGoogle PigeonGoogle’s 2014 local search update, which tied local results more closely to standard web ranking signals.
Read definition → GGoogle SandboxAn alleged Google filter that stops brand-new websites ranking well for their first few months.
Read definition → LLocal Search MarketingMaking a business visible when people nearby search for what it offers, on Google Search, Maps and beyond.
Read definition → OOrganic Search ResultsThe unpaid listings a search engine ranks on merit, as opposed to paid ads.
Read definition → SSEO (Search Engine Optimization)The practice of improving a website so it earns more visibility and traffic from unpaid search results.
Read definition → SSEO BenchmarkingRecording your current search performance and comparing it with competitors and your own history.
Read definition → SSERP FeaturesAny result on a search page beyond a standard blue link, such as AI Overviews, featured snippets and map packs.
Read definition →Keywords & on-page
5 termsThe main, top-level heading on a web page, marked up with the HTML <h1> element.
Read definition → MMeta DescriptionAn HTML tag that summarises a page and is often shown as the snippet under its title in search results.
Read definition → PPrimary KeywordThe main search query a page is designed to rank for.
Read definition → SSEO Title (Title Tag)The HTML title tag, shown as the clickable headline of a page in search results.
Read definition → SShort-Tail KeywordA broad search term of one to three words with high search volume and strong competition.
Read definition →Technical SEO
7 termsA program that systematically discovers and reads web pages so a search engine can index them.
Read definition → GGoogle Search ConsoleGoogle’s free tool for monitoring how a website is crawled, indexed and performs in Google Search.
Read definition → LLink SpamLinks created or bought mainly to manipulate search rankings, in breach of Google’s spam policies.
Read definition → PPBN (Private Blog Network)A group of websites created or bought only to link to another site and lift its rankings.
Read definition → SSpamdexingDeliberately manipulating a search engine’s index to rank pages higher than they deserve.
Read definition → WWebsite Structure (Site Architecture)How a website’s pages are organised, grouped and linked together.
Read definition → XX-Robots-TagAn HTTP response header that tells search engines whether and how to index a URL, including non-HTML files.
Read definition →Paid search
4 termsThe amount an advertiser pays each time someone clicks their ad.
Read definition → IInterstitial AdA full-screen ad that covers the page or app at a natural break between two pieces of content.
Read definition → PPPC (Pay-Per-Click)An online advertising model where the advertiser pays a fee each time someone clicks their ad.
Read definition → SSEM (Search Engine Marketing)Promoting a website in search engine results, most often through paid search ads such as Google Ads.
Read definition →AI search
3 termsAn AI-generated summary Google shows at the top of some search results, with links to its sources.
Read definition → EEntity-Based SEOOptimising for the people, places, brands and concepts that search engines recognise, not only for keywords.
Read definition → PPrompt (AI Prompt)The instruction, question or input given to a generative AI model to produce a response.
Read definition →Glossary questions
6 answersThese definitions help you brief an SEO agency, compare SEO services and packages and check what a quote includes. If you would rather hand the work over, our SEO audit service is the usual first step.
What is an SEO glossary?
An SEO glossary is a list of search marketing terms with plain-English definitions. Ours covers SEO, paid search and AI search terms, and each definition page includes examples, best practices and common questions.
What are the most important SEO terms to know?
Start with SEO, primary keyword, title tag, meta description, organic search results and AI Overview. Together they explain how pages are found, shown and clicked in search.
What is the difference between SEO and SEM?
SEO earns unpaid visibility in search results. SEM usually means paid search ads, such as Google Ads, although some people use it to cover both. Most businesses use SEO for long-term traffic and paid search for faster, controllable results.
How do I learn SEO as a beginner?
Learn the core terms in this glossary first, then read a full guide such as our complete guide to SEO. Practise on a real site with Google Search Console, which is free and shows how Google sees your pages.
Do I need an SEO agency, or can I do SEO myself?
Many small businesses can handle the basics themselves using the definitions here. An SEO agency is worth considering when you compete in a crowded market, have a large or technical site, or lack the time to publish and build links consistently. Our guide on how to choose an SEO agency lists the questions to ask.
How much do SEO services cost?
SEO services are usually priced as a monthly retainer, based on site size, competition and how much technical, content and link work is needed. Our SEO pricing page explains how we scope it, and the SEO budget guide helps you plan.
Rather have experts handle your SEO?
From technical fixes to content and links, our team turns search visibility into leads and revenue.