account for vs soliloquize

account for

verb
  • To be answerable for. 

  • To destroy or put out of action. 

  • To make or render a reckoning of funds, persons, or things. 

  • To be the primary cause of 

  • To explain by relating circumstances; to show that some one, thing or members of a group are present or have been processed. 

  • To constitute in amount or portion. 

soliloquize

verb
  • To perform a soliloquy; (of a character) to talk to oneself. 

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