averment vs disavowal

averment

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

  • verification; establishment by evidence. 

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

disavowal

noun
  • A denial of knowledge, relationship, and/or responsibility towards something (or someone). 

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