charitable vs unrelenting

charitable

adj
  • Kind, generous. 

  • Having a purpose or character of a charity. 

  • Pertaining to charity. 

unrelenting

adj
  • Having no pity; not being or becoming lenient, mild, gentle, or merciful 

  • Not relenting; not yielding in strength, severity, or determination. 

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