third degree vs wringer

third degree

noun
  • Intensive rough interrogation in order to extract information or a confession 

wringer

noun
  • One who wrings. 

  • A device for drying laundry consisting of two rollers between which the wet laundry is squeezed (or wrung); a mangle. 

  • Something that causes pain, hardship, or exertion; an ordeal. 

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