air conditioning vs zephyr

air conditioning

noun
  • The state of temperature and humidity produced by an air conditioner. 

  • An air conditioner or system of air conditioners. 

zephyr

noun
  • Any light refreshing wind; a gentle breeze. 

  • Anything of fine, soft, or light quality, especially fabric. 

  • A light wind from the west. 

verb
  • To blow or blow on gently like a zephyr; to cool or refresh with a gentle breeze. 

  • To blow or move like a zephyr, or light breeze. 

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