appointive vs contractual

appointive

adj
  • Of, pertaining to, or filled by appointment. 

contractual

adj
  • Of, relating to, or enforced by a contract. 

noun
  • A contract specifying details of the relationship with another country or body 

  • A contractualized employee; One who is hired as a temporary worker, especially one who is hired for a single project. 

  • A charge for a service that is applied through a contract with another provider. 

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