commiserate vs offer condolences to

commiserate

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

  • To sympathize; condole. 

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

offer condolences to

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