constraint vs stoke

constraint

noun
  • An irresistible force or compulsion. 

  • A condition that a solution to an optimization problem must satisfy. 

  • A linkage or other restriction that maintains database integrity. 

  • The repression of one's feelings. 

  • Something that constrains; a restriction. 

stoke

noun
  • An act of poking, piercing, thrusting 

verb
  • To attend to or supply a furnace with fuel; to act as a stoker or fireman. 

  • To poke, pierce, thrust. 

  • To encourage a behavior or emotion. 

  • To feed, stir up, especially, a fire or furnace. 

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