This SEO Dictionary is designed to help you understand the essential terms and concepts that drive visibility and performance in search engine optimization. Whether you’re a beginner looking to get familiar with the basics or an experienced marketer brushing up on advanced concepts, this guide covers the key vocabulary across on-page, off-page, technical, and analytical SEO. Use it as a reference to better understand the strategies, tools, and metrics that shape the world of search.

Core SEO Concepts

• SEO (Search Engine Optimization)

• SERP (Search Engine Results Page)

• Organic Search

• Paid Search (PPC)

• Keyword

• Long-Tail Keyword

• Search Intent

• Ranking

• Crawling

• Indexing

• Ranking Factors

On-Page SEO

• Title Tag

• Meta Description

• H1, H2, H3 (Header Tags)

• Alt Text (Image Alt Attributes)

• Internal Linking

• URL Structure

• Keyword Density

• Content Quality

• Canonical Tag

• Schema Markup (Structured Data)

Technical SEO

• Robots.txt

• XML Sitemap

• Mobile-Friendliness

• Page Speed

• Core Web Vitals

• HTTPS / SSL

• Crawl Budget

• Duplicate Content

• Redirects (301, 302)

• JavaScript SEO

Off-Page SEO

• Backlink

• Domain Authority (DA)

• Page Authority (PA)

• Link Building

• Anchor Text

• Nofollow / Dofollow

• Referral Traffic

Analytics & Tools

• Google Search Console

• Google Analytics

• Bounce Rate

• Click-Through Rate (CTR)

• Impressions

• Conversions

• A/B Testing

• Keyword Research Tools (e.g. SEMrush, Ahrefs, Ubersuggest)

• Yoast SEO

• All in One SEO

Search Behavior & Trends

• E-A-T (Expertise, Authoritativeness, Trustworthiness)

• User Experience (UX)

• Search Volume

• Zero-Click Searches

• Local SEO

• Voice Search SEO

• Featured Snippets

• People Also Ask (PAA)