Forum Moderators: martinibuster
Adwords is for publishers who want to pay to have their ads run on Google and on participating web sites.
Adsense is for publisher who want to get paid for running ads on their own sites.
You want to join the AdSense program.
The Tax ID in the USA would be a Social Security number or an Employer Identification number. I don't know what information you will need to provide as an Indian citizen.
Head on over to the Adsense pages and read the Terms of Service -- I imagine that that will answer some of your questions.
Good luck.
So, two sides of the same coin. But look at Google under Business Solutions, and you'll find explanations of both programs, with case studies, screenshots, etc.