equivocation vs falsehood

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. 

falsehood

noun
  • A false statement, especially an intentional one; a lie. 

  • The property of being false. 

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