brass instrument vs woodwind

brass instrument

noun
  • Any musical instrument whose tone is produced by vibration of the lips as the player blows into a mouthpiece (or tubular resonator). 

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 brass instrument and woodwind occurred in a corpus of books? (source: Google Ngram Viewer )