covenant vs stipulate

covenant

verb
  • To enter a formal agreement. 

  • To enter into, or promise something by, a covenant. 

  • To make a stipulation. 

  • To bind oneself in contract. 

noun
  • A promise, incidental to a deed or contract, either express or implied. 

  • An incidental clause in an agreement. 

  • An agreement to do or not do a particular thing. 

  • A pact or binding agreement between two or more parties. 

stipulate

verb
  • To specify, promise or guarantee something in an agreement. 

  • To ask for a contractual term. 

  • To require (something) as a condition of a contract or agreement. 

  • To acknowledge the truth of; not to challenge. 

  • To mutually agree. 

adj
  • Having stipules; that is, having outgrowths borne on either side of the base of the leafstalk. 

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