chilly vs icy

chilly

adj
  • Feeling uncomfortably cold. 

  • Distant and cool; unfriendly. 

  • Cold enough to cause discomfort. 

icy

adj
  • Characterized by coldness of manner; frigid; cold. 

  • To be wearing an excessive amount of jewelry, especially of the high-quality and expensive kind. 

  • Covered with ice, wholly or partially. 

  • Pertaining to, resembling, or abounding in ice; cold; frosty. 

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