condescension vs egoism

condescension

noun
  • A patronizing attitude or behavior. 

  • The act of condescending; a manner of behaving in an outwardly polite way that nevertheless implies superiority to another; patronizing courtesy toward inferiors. 

egoism

noun
  • Egotism (tendency to talk excessively about oneself). 

  • The tendency to think selfishly with exclusive self-interest in mind. 

  • The belief that moral behavior should be directed toward one's self-interest only. 

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