believe vs insinuate

believe

verb
  • To accept as true, particularly without absolute certainty (i.e., as opposed to knowing). 

  • To have religious faith; to believe in a greater truth. 

  • To accept that someone is telling the truth. 

  • To opine, think, reckon. 

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 believe and insinuate occurred in a corpus of books? (source: Google Ngram Viewer )