attractor vs weakness

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. 

weakness

noun
  • A special fondness or desire. 

  • An inadequate quality; fault 

  • The condition of being weak. 

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