chilly vs lukewarm

chilly

adj
  • Feeling uncomfortably cold. 

  • Distant and cool; unfriendly. 

  • Cold enough to cause discomfort. 

lukewarm

adj
  • Between warm and cool. 

  • Unenthusiastic (about a proposal or an idea). 

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