Google Adwords is paid advertising on Google when a user receives an advertisement on a search page that is relevant to the search query he used. The first four lines that a user sees in a search are contextual ads.
 
 

How Google Ads Work?

Messages issued by Google search engine (and its partner sites), on the Youtube channel, targeted has a wide range of opportunities to “target” the audience you need by geography, age, interests, purchasing power, and many other indicators.