cool cat vs icy

cool cat

noun
  • An individual who is at ease and self-assured; one who is calm and composed in interactions with others. 

  • A person who performs or appreciates jazz, especially one whose style of speech and movement is relaxed and rhythmic. 

icy

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

  • Characterized by coldness of manner; frigid; cold. 

  • Covered with ice, wholly or partially. 

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

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