Assuming that you have a full Adsense account (& not a hosted one), in what year was your Adsense account approved?

adsense has many type of ads based on advertiser's request..yes both Pageviews and Clicks are available..
adsense algorthym will determine which ads to be displayed, so different visitors will see different ads of different type of different targetting type

but thats not all..you can also monetize through Youtube, Apps, Custom Search Engine (CSE)

there are many ways to generate $$$ using adsense.. i've seen ppl generating 1000usd per month, as well as 1000usd per day

cheque