lust vs unselfishness

lust

noun
  • A feeling of strong desire, especially such a feeling driven by sexual arousal. 

verb
  • To look at or watch with a strong desire, especially of a sexual nature. 

unselfishness

noun
  • The state of being unselfish. 

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