auto-suggestion vs intimation

auto-suggestion

noun
  • An instance of suggesting a thought to oneself. 

  • The practice of suggesting thoughts to oneself. 

intimation

noun
  • A hint; an obscure or indirect suggestion or notice; a remote or ambiguous reference. 

  • The thing intimated. 

  • Announcement; declaration. 

  • The act of intimating. 

How often have the words auto-suggestion and intimation occurred in a corpus of books? (source: Google Ngram Viewer )