gravy vs reward

gravy

noun
  • Unearned gain. 

  • Sauce used for pasta. 

  • A dark savoury sauce prepared from stock and usually meat juices; brown gravy. 

  • Extra benefit. 

  • Curry sauce. 

  • A pale sauce prepared from a roux with meat fat; a type of béchamel sauce. 

verb
  • To make gravy. 

reward

noun
  • The result of an action, whether good or bad. 

  • Something of value given in return for an act. 

  • A prize promised for a certain deed or catch 

verb
  • To give a reward to or for. 

  • To recompense. 

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