hurtful vs nontoxic

hurtful

adj

  • Tending to hurt someone's feelings; insulting. 

  • Tending to impair or damage; injurious; occasioning loss or injury. 

nontoxic

noun

  • A substance that is not toxic. 

adj

  • Not toxic; not poisonous. 

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