bode vs warn

bode

verb
  • To indicate by signs, as future events; to be an omen of; to portend or foretell. 

  • simple past tense of bide 

  • To betoken or augur something good or bad that will happen in the future. 

noun
  • A stop; a halting; delay. 

  • An omen; a foreshadowing. 

  • A herald; a messenger. 

warn

verb
  • To make (someone) aware of impending danger, evil, etc. 

  • To notify or inform (someone, about something). 

  • To caution or admonish (someone) against unwise or unacceptable behaviour. 

  • To give warning. 

  • To summon (someone) to or inform of a formal meeting or duty. 

  • To advise or order to go or stay away. 

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