perjure vs talk through one's hat

perjure

verb
  • To make a false oath to; to deceive by oaths and protestations. 

  • To cause to violate an oath or a vow; to cause to make oath knowingly to what is untrue; to make guilty of perjury; to forswear; to corrupt. 

  • To knowingly and willfully make a false statement of witness while in court. 

talk through one's hat

verb
  • To assert something as true or valid; to bluff. 

  • To speak lacking expertise, authority, or knowledge; to invent or fabricate facts. 

How often have the words perjure and talk through one's hat occurred in a corpus of books? (source: Google Ngram Viewer )