compliant vs diehard

compliant

adj
  • Willing to comply; submissive; willing to do what someone wants. 

  • Compatible with or following guidelines, specifications, rules, or laws. 

diehard

adj
  • Unreasonably or stubbornly resisting change. 

  • Fanatically opposing progress or reform. 

  • Complete; having no opposite opinion of anything in a particular topic of one's values; thorough of in one's beliefs. 

noun
  • A person with such an attitude. 

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