charitable vs unnatural

charitable

adj
  • Kind, generous. 

  • Having a purpose or character of a charity. 

  • Pertaining to charity. 

unnatural

adj
  • Going against nature; perverse. 

  • Not occurring in nature, the environment or atmosphere 

  • Not natural. 

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