beleaguer vs vex

beleaguer

verb
  • To vex, harass, or beset. 

  • To besiege; to surround with troops. 

  • To exhaust. 

vex

verb
  • To toss back and forth; to agitate; to disquiet. 

  • To twist, to weave. 

  • To cause (mental) suffering to; to distress. 

  • To annoy, irritate. 

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