level set vs symphonize

level set

verb
  • To establish a baseline of mutual understanding 

noun
  • 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. 

  • A state of mutual understanding among parties 

symphonize

verb
  • To agree; to be in harmony. 

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