averment vs swearing

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. 

swearing

noun
  • The act of swearing, or making an oath. 

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