imposture vs ruse

imposture

noun
  • The act or conduct of an impostor; deception practiced under a false or assumed character; fraud or imposition 

ruse

noun
  • An action intended to deceive; a trick. 

  • Cunning, guile, trickery. 

verb
  • To deceive or trick using a ruse. 

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