cooperative vs pertinacious

cooperative

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. 

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

pertinacious

adj
  • Holding tenaciously to an opinion or purpose. 

  • Stubbornly resolute or tenacious. 

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