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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.

28 terms5 topicsUpdated October 8, 2026

Glossary questions

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These 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.

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