equivocate vs lead on a merry chase

equivocate

verb
  • To render equivocal or ambiguous. 

  • To speak using double meaning; to speak ambiguously, unclearly or doubtfully, with intent to deceive. 

lead on a merry chase

How often have the words equivocate and lead on a merry chase occurred in a corpus of books? (source: Google Ngram Viewer )