What is Thanks ?
Thanks is (noun) a word showing that you are grateful We sent our thanks for the gift. We did our best to help but got no thanks for it. The committee passed a vote of thanks to the school for having organised the meeting. Many thanks for your letter of the 15th. Synonym gratitude. Antonym ingratitude (interj) showing you are grateful Do you want some more tea? No thanks. I’ve had two cups already. Anyone want a lift to the station? Thanks, it’s a long walk from here.
source: Easier English, Student Dictionary Upper Intermediate Level