frugality vs self-abnegation

frugality

noun
  • A sparing use; sparingness. 

  • The quality of being frugal; prudent economy; thrift. 

self-abnegation

noun
  • The denial or invalidation of one's own needs, interests, etc. for the sake of another's; the setting aside of self-interest. 

  • An act of self-denial. 

How often have the words frugality and self-abnegation occurred in a corpus of books? (source: Google Ngram Viewer )