kindling vs motivation

kindling

noun
  • The act by which something is kindled. 

  • Small pieces of wood and twigs used to start a fire. 

adj
  • Illuminated, lit. 

motivation

noun
  • An incentive or reason for doing something. 

  • Something which motivates. 

  • A research rating that measures how the rational and emotional elements of a commercial affect consumer intention to consider, visit, or buy something. 

  • The action of motivating. 

  • Willingness of action especially in behavior. 

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