outrival vs overmatch

outrival

verb
  • To outperform; to outdo. 

overmatch

verb
  • To match more than intended. 

  • To marry to a superior. 

  • To be more than equal to or a match for, to surpass; hence, to conquer, vanquish. 

noun
  • A match in which one opponent is greatly superior to the other. 

  • An opponent who is more than a match for another; one who cannot be defeated. 

How often have the words outrival and overmatch occurred in a corpus of books? (source: Google Ngram Viewer )