nonpoisonous vs toxicant

nonpoisonous

adj

  • Not poisonous. 

toxicant

adj

  • Capable of causing damage or dysfunction by toxicity; (broadly) poisonous. 

noun

  • A toxic or poisonous substance. 

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