commiserate vs vaunt

commiserate

verb
  • To offer condolences jointly with; express sympathy with. 

  • To sympathize; condole. 

  • To feel or express compassion or sympathy for (someone or something). 

vaunt

noun
  • A boast; an instance of vaunting. 

verb
  • To speak boastfully about. 

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

  • To speak boastfully. 

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