beleaguer vs facilitate

beleaguer

verb
  • To besiege; to surround with troops. 

  • To exhaust. 

  • To vex, harass, or beset. 

facilitate

verb
  • To help bring about. 

  • To make easy or easier. 

  • To preside over (a meeting, a seminar). 

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