About Google Adsense and Google Adwords services
For those who do not already know, Google Adsense is a program which you can display relevant ads with on your website, and earn money each time someone clicks one of the advertisements. This means that if you have a website about money, then you'll display ads for websites in the same field or a similar one.
These ads come from Google Adwords. Just as you want to earn money from your website, there are also other people who want the same thing.
Advertisers subscribe to the Google Adwords service, then they write a title
for their online business, followed by a small description, and then decide how much to
pay so as to have their ad displayed. After this, Google decides what percentage is offered to the one using Google Adsense.
In conclusion, to make profit from Adsense you have to provide relevant ads for viewers, luring them to click.