averment vs testament

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. 

testament

noun
  • A tangible proof or tribute. 

  • A solemn, authentic instrument in writing, by which a person declares his or her will as to disposal of his or her inheritance (estate and effects) after his or her death, benefiting specified heir(s). 

  • One of the two parts to the scriptures of the Christian religion: the New Testament, considered by Christians to be a continuation of the Hebrew scriptures, and the Hebrew scriptures themselves, which they refer to as the Old Testament. 

  • A credo, expression of conviction 

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