shoo-in vs vow

shoo-in

noun
  • The winner of a fixed race, a fixed race. 

  • A candidate or contestant generally agreed upon as the presumptive winner; somebody who is well-liked or widely agreed upon. 

vow

verb
  • To declare publicly that one has made a vow, usually to show one's determination or to announce an act of retaliation. 

  • To make a vow; to promise. 

  • To make a vow regarding (something). 

noun
  • A solemn promise to perform some act, or behave in a specified manner, especially a promise to live and act in accordance with the rules of a religious order. 

  • A declaration or assertion. 

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