get under one's goat vs vex

get under one's goat

verb
  • To irritate or annoy someone; to bother. 

vex

verb
  • To annoy, irritate. 

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

  • To twist, to weave. 

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

How often have the words get under one's goat and vex occurred in a corpus of books? (source: Google Ngram Viewer )