Hang vs woodwind

Hang

noun
  • A musical instrument invented and built by PANArt Hangbau AG, somewhat resembling a steelpan. 

woodwind

noun
  • Any (typically wooden) musical instrument that produces sound by the player blowing into it, through a reed, or across an opening. Woodwind instruments include the recorder, flute, piccolo, clarinet, oboe, cor anglais and bassoon. 

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