acquire vs procure

acquire

verb
  • To get. 

  • To sample signals and convert them into digital values. 

  • To contract. 

  • To gain, usually by one's own exertions; to get as one's own 

procure

verb
  • To acquire or obtain. 

  • To obtain a person as a prostitute for somebody else. 

  • To induce or persuade someone to do something. 

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