Nimzo Indian vs. anything other than Queens Gambit opening???

I'm obviously a beginner, 1100 elo, but as I try to find videos on the Nimzo Indian I only see the defense against the Queens Gambit opening. Therefore my question is......Is the Nimzo exclusive to the Queens Gambit opening???

I understand that the nimzo Indian is a defense and the Queens gambit is an offensive opening for white....my statement was thast the only videos I find on the nimzo are exampled against the Queens Gambit, therefore my question is....Is the Nimzo only preferred against the QG....or are there other openings the Nimzo Indian would defend well agsinst???

Thank you bb_gum234 for the clarification. I'm attempting to understand some principle with the Nimzo. It seems like a solid defense against the Queens pawn opening. I was confusing QPO with QG. My mistake. 

Thank you all for the help. I'm learning....and now I know more than I did yesterday.