bode vs ensure

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. 

ensure

verb
  • To make sure or certain of something (usually some future event or condition). 

  • To make a pledge to (someone); to promise, guarantee (someone of something); to assure. 

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