cooperative vs relentless

cooperative

noun
  • A type of company that is owned partially or wholly by its employees, customers or tenants. 

adj
  • Ready to work with another person or in a team; ready to cooperate. 

  • Involving cooperation between individuals or parties. 

  • Relating to a cooperative or cooperatives. 

relentless

adj
  • Unrelenting or unyielding in severity. 

  • Unremitting, steady and persistent. 

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