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SEO Course / Search Engine Marketing and Paid Search / Lesson 45

Module 08 / Lesson 45 · Read, apply, check

Paid Search Keywords, Match Types and Negative Keywords

Use match types and exclusions to connect paid search to suitable demand while checking what actually matched.

By Adriaan BritsCEO of Sitetrail · MSc Marketing
Former LinkedIn Learning instructor in SEO, Advanced Google Analytics and Google Ads
Course edition: October 2026

Visual explanationWorked examples25-minute practical taskKnowledge check

Distinguish keywords from searches

A keyword is an advertiser’s targeting input; a search term is what a person actually entered. Do not assume the two strings will match literally. Modern positive matching considers meaning, and broader settings may reach related needs. Review actual available search-term evidence alongside the selected keyword, the ad shown and the resulting customer quality.

Choose a controlled expansion

Exact, phrase and broad matching offer different degrees of reach and control, but exact does not mean identical spelling only. Choose settings in the context of conversion measurement, bidding, budget and the clarity of the offer. Broader reach creates learning opportunities and potential waste; narrower targeting can miss relevant demand. Neither is universally correct for every account.

Build exclusions from business facts

Negative keywords help exclude unsuitable searches. Their matching rules differ from positive keywords, so review variants and the scope of exclusions deliberately. Account-wide negatives should represent genuinely universal exclusions, while campaign-specific needs belong at the appropriate level. An overly broad exclusion can block valuable prospects just as an absent exclusion can waste spend.

Close the feedback loop

Combine the search terms report with lead disposition and customer outcomes. A relevant-looking phrase may attract researchers, job seekers or buyers outside your service area. Document the reason for a change and inspect its effect after enough observations. Do not treat the report as a complete census of every search, or optimize only toward cheap clicks.

Route searches by business fit

“Commercial machine repair”

Potentially include → matches the service; inspect actual inquiry quality.

“Repair technician jobs”

Exclude employment intent at the appropriate scope.

“Home-office machine service”

Review → some small businesses may qualify; avoid an overbroad exclusion.

After a rule change

Check actual searches, variants and qualified response rather than clicks alone.

Illustrative routing examples. Positive and negative match rules differ; exact positive matching is not literal-text-only targeting.

See it in practice

Hypothetical example: a company sells commercial coffee-machine maintenance, not coffee machines or employment opportunities. Its campaign begins with a focused group of service-intent terms and a page explaining coverage and response times. Early inquiries reveal several job seekers and consumers wanting household repairs. The manager reviews the associated searches, adds carefully scoped exclusions for employment intent and clarifies commercial-only service in the ad. Before excluding every search containing “home,” she checks whether home-office businesses are eligible customers. She also asks the sales team to label suitable inquiries consistently. Expansion is considered only after the campaign can distinguish a useful service request from a form submission that consumes staff time without a realistic sale.

Compare the alternative

A manager copies a huge negative-keyword list from another company and applies it across the entire account without reviewing the offer. Some exclusions remove irrelevant clicks, but others suppress searches for legitimate service packages. Lower spend looks efficient until qualified inquiries decline. Exclusions should encode the business’s actual boundaries and be audited for conflicts, rather than becoming an unexamined inherited list that nobody can explain.

Avoid this misconception

Misconception: exact match guarantees an ad appears only for an identical query. Correction: positive matching can include meaning and close variants. Judge reach using actual search evidence and current platform documentation, not an old punctuation-based mental model.

Know the boundary

Reporting thresholds and limited samples leave gaps. An exclusion decision should combine business eligibility with observed evidence; a single unqualified inquiry is rarely sufficient to condemn an otherwise promising search theme.

Do this today · 25 minutes

Turn this lesson into a useful action.

For one offer, list five suitable searches and five unsuitable searches. Explain the business reason for each exclusion, choose its scope and identify a variant or exception that requires review before applying it.

Before you start

Use an authorized page or campaign relevant to this lesson, or work entirely from the illustrative sample below. Record proposed changes as drafts until they are approved and implemented.

Practise with this scenario

An office-software campaign attracts “free student download” searches although the offer is paid business software.

Your steps

  • List five suitable and five unsuitable searches for the actual offer.
  • Write why each unsuitable query is irrelevant, checking exceptions and product eligibility.
  • Draft negative-keyword candidates with deliberate match behavior and campaign/ad-group scope.
  • Review the proposed exclusions against valuable queries before applying them, and keep a change log.

What better looks like

Before: Exclude a broad word without checking legitimate variants.

After: A reviewed exclusion targets unsuitable intent without blocking valuable demand.

Your working notes

Notes stay in this browser. Download a copy to keep them.

Verify your work

  • Targeting inputs are distinguished from actual customer searches.
  • Negative rules, variants and scope are checked deliberately.
  • Changes are evaluated against qualified outcomes, not clicks alone.

Follow up

Inspect subsequent search-term and qualified-outcome evidence; reverse exclusions that unintentionally block useful searches.

Before you move on

Make the decision.

A commercial repair company receives many job applications from a paid-search campaign. Its manager also discovers that some apparently irrelevant searches come from eligible small businesses. What is the most defensible next step before expanding the campaign’s reach?

Sources and further reading

Google Ads: Keyword matching options

Google Ads: Negative keywords

Lesson edition 2 · References reviewed 14 October 2026 · Practical exercise reviewed 15 October 2026. Examples are illustrative teaching scenarios.

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