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Keywords are the terms and phrases that users type into search engines like Google to find information, products, or services. In SEO, choosing the right keywords is the starting point of any content and ranking strategy.

What are Keywords in SEO

Keywords are the bridge between what your customer is looking for and the content you offer. When someone types digital marketing agency in Joinville into Google, that is the keyword — and the company that optimized its website for that term appears in the results.

In SEO, choosing keywords requires analyzing three dimensions:

Search volume: how many people search for this term per month?
Search intent: does the searcher want to buy, learn, or compare?
Competition: how difficult is it to appear in the 1st position for this term?

Types of Keywords

By size:

Short-tail (1–2 words) — e.g., digital marketing — very high volume, very high competition
Mid-tail (2–3 words) — e.g., digital marketing agency — medium volume, medium competition
Long-tail (3+ words) — e.g., digital marketing agency joinville sc — low volume, low competition, higher conversion

By search intent:

Informational — what is seo → use in blog and glossary
Navigational — focofy joinville → home and about
Comparative — seo vs paid traffic → comparative posts
Transactional — hire seo agency joinville → service pages and landing pages

By location (Local SEO): [service] + [city], [service] + near me, [service] + [state].

How to Research Keywords

Main tools: Google Search Console (free — real queries from your site), Google Keyword Planner (free with Ads account), Ubersuggest (freemium), SEMrush/Ahrefs (paid — complete analysis + competitors’ keywords), AnswerThePublic (related questions) and Google Autocomplete.

4-step process:

Brainstorm: list the terms your customers would use to find you
Expansion: use tools to find variations, long-tails, and related questions
Analysis: evaluate volume × difficulty × intent for each term
Prioritization: choose 1 primary keyword per page + 3–5 related secondary keywords

Where to Insert the Keyword on the Page

The highest priority elements are: title tag (at the beginning), H1 (mandatory), URL (clean slug) and meta description (affects CTR). Medium priority elements: H2/H3 with variations, first 100 words of the text, anchor text of internal links and alt text of images.

Common Keyword Mistakes

Keyword stuffing: artificially repeating the keyword — penalized by Google
Cannibalization: two pages optimized for the same keyword competing against each other
Ignoring intent: using an informational keyword on a service page — Google does not rank
Focusing only on volume: a keyword with 50,000 searches may bring traffic that never converts
Ignoring local keywords: SEO Joinville has a real chance, SEO competes globally

Related Terms

SEO — the discipline that uses keywords to rank on Google
Domain Authority — determines if your site can rank for the chosen keywords
CTR — Click-Through Rate — the keyword in the title tag directly impacts organic CTR
Sales Funnel — each type of keyword serves a different stage of the funnel
ROI — transactional keywords have the highest ROI in SEO