impassionate vs vehement

impassionate

adj
  • filled with passion; impassioned 

  • Lacking passion; dispassionate 

verb
  • to affect powerfully; to arouse the passions of 

vehement

adj
  • Showing strong feelings; passionate; forceful or intense. 

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