laxity vs leanness

laxity

noun
  • The state of being lax; looseness, lack of tension. 

  • Moral looseness; lack of rigorousness or strictness. 

leanness

noun
  • The property of being lean, without excess or fat. 

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