disobedience vs insubordination

disobedience

noun
  • Refusal to obey. 

insubordination

noun
  • The quality or state of being insubordinate; disobedience to lawful authority; specifically, an employee's failure or refusal to comply with a request or an assignment given by his/her supervisor. 

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