A plain-language explanation
Keyword Planner is a Google Ads tool that supports searching for phrases, assessing approximate demand and planning campaigns on the search network.
Where it helps in practice
Keyword Planner provides advertising estimates that reveal demand but not the complete organic intent picture.
The decision before implementation
Set country, language, network and period and group queries by user need rather than volume alone.
How to verify the result
Compare seasonality, paid competition, Search Console and conversions from resulting content.