choose vs level set

choose

verb
  • To decide to act in a certain way. 

  • To elect. 

  • To prefer; to wish; to desire. 

  • To pick; to make the choice of; to select. 

conj
  • The binomial coefficient of the previous and following number. 

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 

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