aver vs depose

aver

verb
  • To justify or prove (an allegation or plea that one has made). 

  • To assert the truth of (something); to affirm (something) with confidence; to declare (something) in a positive manner. 

depose

verb
  • To testify; to bear witness; to claim; to assert; to affirm. 

  • To put down; to lay down; to deposit; to lay aside; to put away. 

  • To interrogate and elicit testimony from during a deposition; typically done by a lawyer. 

  • To take or swear an oath. 

  • To remove (a leader) from (high) office, without killing the incumbent. 

  • To give evidence or testimony, especially in response to interrogation during a deposition 

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