ear to the ground vs insensitive

ear to the ground

noun
  • The practice or characteristic of carefully gathering information; a state or mindset of attentiveness. 

  • Pursuing the practice or having the characteristic of carefully gathering information; well-informed. 

insensitive

adj
  • Expressing or feeling little or no concern, care, compassion, or consideration for the feelings, emotions, sentiments, or concerns of other people; inconsiderate or incompassionate 

  • Not expressing normal physical feeling; 

  • Not expressing normal emotional feelings; cold; tactless; undiplomatic 

How often have the words ear to the ground and insensitive occurred in a corpus of books? (source: Google Ngram Viewer )