Adwords is an advertising product. It has various ways to advertise text, banners, and rich-media commercials.
The AdWords Keyword Tool is an incredibly useful and powerful keyword research tool, built into the AdWords interface. Now it is known as "Keyword Planner". Many Google Partner Agencies like Radon Media as well as businesses who are running online advertising campaigns on Google use this tool to search for keyword and ad group ideas, see how a list of keywords might perform, and even create a new keyword list by multiplying several lists of keywords together. Keyword Planner can also help you choose competitive bids and budgets to use with your campaigns.
The AdWords Keyword Planner supports three key use cases: