level set vs solo

level set

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 

verb
  • To establish a baseline of mutual understanding 

solo

noun
  • A card game similar to whist in which each player plays against the others in turn without a partner 

  • A job or performance done by one person alone. 

  • A piece of music for one performer. 

  • A single shot of espresso. 

  • An instance of soloing the football. 

adj
  • Of, or relating to, a musical solo. 

  • Without a companion or instructor. 

adv
  • Alone, without a companion. 

verb
  • To perform something in the absence of anyone else. 

  • To drop the ball and then toe-kick it upward into the hands. 

  • To perform a solo. 

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