level set vs participation

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 

participation

noun
  • The state of being related to a larger whole. 

  • The act of participating, of taking part in something. 

  • The process during which individuals, groups and organizations are consulted about or have the opportunity to become actively involved in a project or program of activity. 

  • An ownership interest or profit-sharing right. 

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