balmy vs hibernal

balmy

adj
  • Producing balm. 

  • Soothing or fragrant. 

  • Foolish; slightly crazy or mad; eccentric. 

  • Of weather, mild and pleasant. 

hibernal

adj
  • Of or pertaining to winter; brumal or hiemal 

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