detract vs prefer

detract

verb
  • To take credit or reputation from; to defame or decry. 

  • To take away; to withdraw or remove. 

prefer

verb
  • To present or submit (something) to an authority (now usually in "to prefer charges"). 

  • To be in the habit of choosing something rather than something else; to favor; to like better. 

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