acquire vs take possession

acquire

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

  • To sample signals and convert them into digital values. 

  • To contract. 

  • To get. 

take possession

verb
  • To seize or get control over. 

  • To become the owner (of). 

  • To assume responsibility for. 

  • To become established in 

  • To possess; to dominate or control the mind of 

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