kindly vs tough

kindly

adj
  • Having a kind personality; kind, warmhearted, sympathetic. 

adv
  • Kind of, somewhat. 

  • In a kind manner, out of kindness. 

  • In a favourable way. 

  • With kind acceptance; used with take. 

  • Used to make a polite request: please. 

tough

adj
  • Strong and resilient; sturdy. 

  • Harsh or severe. 

  • Difficult or demanding. 

  • Stubborn or persistent; capable of stubbornness or persistence. 

  • Undergoing plastic deformation before breaking. 

  • Difficult to cut or chew. 

  • Rugged or physically hardy. 

  • Rowdy or rough. 

verb
  • To endure. 

  • To toughen. 

intj
  • Used to indicate lack of sympathy 

noun
  • A person who obtains things by force; a thug or bully. 

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