allay vs whet

allay

verb
  • To alleviate; to abate; to mitigate. 

  • To make quiet or put at rest; to pacify or appease; to quell; to calm. 

noun
  • Alleviation; abatement; check. 

whet

verb
  • To stimulate or make more keen. 

  • To hone or rub on with some substance, as a piece of stone, for the purpose of sharpening – see whetstone. 

noun
  • The act of whetting something. 

  • That which whets or sharpens; especially, an appetizer. 

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