level set vs treaty

level set

noun
  • A state of mutual understanding among parties 

  • An event consisting of level setting 

  • The set of values x for which a real-valued function f(x) is equal to a given constant. 

verb
  • To establish a baseline of mutual understanding 

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