galley proof vs testimony

galley proof

noun
  • A trial page or proof of continuous text that has not been divided into pages. 

testimony

noun
  • Witness; evidence; proof of some fact. 

  • Statements made by a witness in court. 

  • In a church service (or religious service), a personal account, such as one's conversion, testimony of faith, or life testimony. 

  • An account of first-hand experience. 

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