apocryphal vs not definite

apocryphal

adj
  • Of dubious veracity; of questionable accuracy or truthfulness; anecdotal or in the nature of an urban legend. 

  • Of, or pertaining to, the Apocrypha. 

  • Of doubtful authenticity, or lacking authority; not regarded as canonical. 

not definite

How often have the words apocryphal and not definite occurred in a corpus of books? (source: Google Ngram Viewer )