agreement vs treaty

agreement

noun
  • A legally binding contract enforceable in a court of law. 

  • Rules that exist in many languages that force some parts of a sentence to be used or inflected differently depending on certain attributes of other parts. 

  • An understanding between entities to follow a specific course of conduct. 

  • A state whereby several parties share a view or opinion; the state of not contradicting one another. 

treaty

noun
  • A formal binding agreement concluded by subjects of international law, namely, states and international organizations; a convention, a pact. 

verb
  • To get into (a specific situation) through a treaty. 

  • To enter into a treaty. 

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