To clarify further, Adwords cannot create direct revenue for you. It creates revenue only when the paid traffic generated through Google Adwords has led to a transaction completed on the advertisers website.
Google AdWords is the Keyword Submission program that determines the advertising rates and keywords used in the Google AdSense program. Advertisers bid on the keywords that are relevant to their businesses.
Keywords are the basis of any SEO campaign and even if you are an expert in your niche, you should always research keywords simply because users frequently search for quite unexpected keywords and keyphrases you as an expert will never think of.
Google Adwords is kind of marketing program by Google for companies seeking to show ads on Search engines as well as its advertising and marketing system. The AdWords system allows organizations to create a financial budget for promotion and just pay whenever people go through the ads.
What people search on search engine and searching results shown in quantity on google ad words, which means maximum of use to get results for any business champagne.