accroach vs rip off

accroach

verb
  • To encroach. 

  • To usurp, as jurisdiction or royal prerogatives. 

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

rip off

verb
  • To pull off by ripping 

  • To steal, cheat or swindle. Especially to charge an exorbitant or unfair rate. 

  • To copy, especially illegally. 

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