equivocation vs pretense

equivocation

noun
  • The use of expressions susceptible of a double signification, possibly intentionally and with the aim of misleading. 

  • A logical fallacy resulting from the use of multiple meanings of a single expression. 

pretense

noun
  • An unsupported claim made or implied. 

  • An insincere attempt to reach a specific condition or quality. 

  • Intention or purpose not real but professed. 

  • A false or hypocritical profession 

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