nobility vs selfishness

nobility

noun
  • The quality of being noble. 

  • A noble or privileged social class, historically accompanied by a hereditary title; aristocracy. 

selfishness

noun
  • the quality of being selfish; the condition of putting one's own interests before those of others. 

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