attractor vs motivation

attractor

noun
  • Something which attracts. 

  • A set of points or states to which a dynamical system evolves after a long enough time. That is, points that get close enough to the attractor remain close even if slightly disturbed. 

motivation

noun
  • 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. 

  • An incentive or reason for doing something. 

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