hurtful vs symbiotic

hurtful

adj
  • Tending to hurt someone's feelings; insulting. 

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

symbiotic

adj
  • Of, or relating to symbiosis; living together. 

  • Of a relationship with mutual benefit between two individuals or organisms. 

noun
  • symbiotic star 

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