beleaguer vs importune

beleaguer

verb
  • To vex, harass, or beset. 

  • To besiege; to surround with troops. 

  • To exhaust. 

importune

verb
  • To bother, irritate, trouble. 

  • To harass with persistent requests. 

  • To approach to offer one's services as a prostitute, or otherwise make improper proposals. 

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