new wave vs vanguard

new wave

noun
  • An alternative and broad pop and rock music genre that existed during the late 1970s and the early to mid-1980s, incorporating punk sensibilities and/or other forms of music, but made with more accessibility. 

adj
  • Representing the latest and most advanced style. 

vanguard

noun
  • The person(s) at the forefront of any group or movement. 

  • The leading units at the front of an army or fleet. 

How often have the words new wave and vanguard occurred in a corpus of books? (source: Google Ngram Viewer )