dupe vs two-time

dupe

verb
  • To duplicate. 

  • To swindle, deceive, or trick. 

noun
  • A duplicate of an order receipt printed for kitchen staff. 

  • A duplicate of a photographic image. 

  • A person who has been deceived. 

  • A duplicate. 

  • A counterfeit; a fake. 

two-time

verb
  • To double-cross. 

  • To be unfaithful to one's (sexual) partner. 

adj
  • On two occasions; twice. 

How often have the words dupe and two-time occurred in a corpus of books? (source: Google Ngram Viewer )