The characteristics of Adwords is that you get only paid when someone clicks on your ad. After creating an account with Adwords you can create your advertising campaigns to choose your ads and budget. Thereafter, decide where you want the ads to appear and Google charges when someone clicks on the ads.
The difference between Adwords and Adsense is that AdWords allows you to advertise on the Google Search Results Pages (and the network of partners,) while Adsense is the platform to use as a publisher to display Google Ads on your website.
Another difference is Your AdWords and Adsense account may use the same Google login but they are totally different and independent. For example, you may end up losing your AdWords account but still have access to Adsense and the opposite.
Adwords does not allow the landing page to have Adsense. This means that while it’s ok to run AdSense on your website and also use Adwords, the landing page should not have Adsense.