I'm not quite sure what you are asking, Wired Suzanne. Could you clarify?
Specifically, when you say "...can anybody cares to explain whether its effective to use Adsense compare to adwords, or is it support each other?", which of the following do you mean:
* Should you choose to have your AdWords ads show on AdSense sites (I.e. on sites in the AdWords partner network)? Or,
* should you choose to have AdWords ads published on your site (I.e. to become an AdSense publisher)?
If that doesn't make sense, here is a very brief summary of the AdWords program, as compared to the AdSense program:
If you are an AdWords advertiser, then you create ads which appears on Google and, if you choose, on the search partner network and/or the content partner network (in other words, on sites where AdSense publishers are publishing your ads).
If you are an AdSense publisher, then you publish AdWords ads on your site, and are paid a portion of the CPC that the advertiser pays, when their ad is clicked on.