mourn vs vaunt

mourn

verb
  • To utter in a sorrowful manner. 

  • To express sadness or sorrow for; to grieve over (especially a death). 

  • To wear mourning. 

noun
  • Sorrow, grief. 

  • A ring fitted upon the head of a lance to prevent wounding an adversary in tilting. 

vaunt

verb
  • To speak boastfully. 

  • To speak boastfully about. 

  • To boast of; to make a vain display of; to display with ostentation. 

noun
  • A boast; an instance of vaunting. 

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