imply vs insinuate

imply

verb
  • to hint; to insinuate; to suggest tacitly and avoid a direct statement 

  • to suggest by logical inference 

  • to have as a necessary consequence 

insinuate

verb
  • To hint; to suggest tacitly (usually something bad) while avoiding a direct statement. 

  • To creep, wind, or flow into; to enter gently, slowly, or imperceptibly, as into crevices. 

  • To ingratiate; to obtain access to or introduce something by subtle, cunning or artful means. 

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