accroach vs acquire

accroach

verb
  • To hook, or draw to oneself as with a hook. 

  • To usurp, as jurisdiction or royal prerogatives. 

  • To encroach. 

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. 

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