CPC:Approximate CPC is calculated by taking the average of the keyword's cost-per-click bids across all ad positions on the Google Search Network. The approximate CPC is only an average, and your actual cost-per-click bid may vary.
COMPETITION: The number of advertisers worldwide bidding on each keyword relative to all keywords across Google. In the "Competition" column, you can see whether the competition for a keyword idea is low, medium, or high..
GOOGLE GSV: Average number of searches over 12 months for each keyword in all locations, languages, devices, and keyword match types
RPC: The number of the exact phrase of the domain in the registered domain pool(zone)..