Where Google Trends fits
Use it to explore seasonality or regional differences before choosing a research direction.
Check before you choose
Relative interest is not an absolute search-volume figure; keep the comparison settings consistent.
Find the right edition
Start with the destination for your device or the publisher's website. Use the current requirements and terms there to confirm the edition you need.
Compare the workflow
Research tools estimate opportunities, campaign tools distribute messages, and analytics tools measure configured events. Set the question and measurement plan first so reports do not become a substitute for decisions.