Google Ads glossary
Match types (broad, phrase, exact) set how far a search can drift from your keyword and still trigger your ad.
The broader the type, the more varied the searches your ad can show on. A broader type also covers the searches of the narrower ones.
Negative keywords follow their own match rules.
Your match type decides which intent you buy. On broad, a keyword can show on searches from browsers. On exact, you keep control but give up reach.
Set it according to what you know about the keyword: one with proven buying intent can move to exact, and one you are testing is worth a small budget before you widen it.
Take the keyword “women’s running shoes”. On exact, your ad targets searches with the same meaning. On phrase, it can also show on a more specific version, such as “women’s running shoes on sale”. On broad, it can appear on related searches that sit further away, like training advice.
Free tool: Match type generator
The generator turns your keywords into broad, phrase and exact match, cleaned up and ready to paste into Google Ads.
Official source: Google Ads Help: keyword matching options