frugality vs moderation

frugality

noun
  • A sparing use; sparingness. 

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

moderation

noun
  • An instance of moderating: bringing something away from extremes, especially in a beneficial way 

  • The state or quality of being moderate; avoidance of extremes 

  • The process of moderating a discussion 

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