averment vs confirming

averment

noun
  • verification; establishment by evidence. 

  • The act of averring, or that which is averred; positive assertion. 

  • A positive statement of facts; an allegation; an offer to justify or prove what is alleged. 

confirming

noun
  • An act of confirmation. 

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