please vs prefer

please

verb
  • To desire; to will; to be pleased by. 

  • To make happy or satisfy; to give pleasure to. 

adv
  • An expression of annoyance or impatience. 

  • Said as a request to repeat information. 

  • Used to make a polite request. 

  • Used as an affirmative to an offer. 

prefer

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

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

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