settlement agreement vs treaty

settlement agreement

noun
  • A contractual agreement between parties to actual or potential litigation by which each party agrees to a resolution of the underlying dispute. 

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 settlement agreement and treaty occurred in a corpus of books? (source: Google Ngram Viewer )