be a sign of vs bode

be a sign of

bode

noun
  • A stop; a halting; delay. 

  • An omen; a foreshadowing. 

  • A herald; a messenger. 

verb
  • simple past tense of bide 

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

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

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