equivocation vs hesitancy

equivocation

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

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

hesitancy

noun
  • A pausing or halting before beginning a task, often as a result of some fear or uncertainty about the outcome. 

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