alliance vs level set

alliance

noun
  • The persons or parties allied. 

  • Marriage. 

  • The state of being allied. 

  • The act of allying or uniting. 

  • A union or connection of interests between families, states, parties, etc., especially between families by marriage and states by compact, treaty, or league. 

  • Any union resembling that of families or states; union by relationship in qualities; affinity. 

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 

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