exhilarate vs hearten

exhilarate

verb
  • To cheer, to cheer up, to gladden, to make happy. 

  • To excite, to thrill. 

hearten

verb
  • To give heart to; to encourage, urge on, cheer, give confidence to. 

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