fellow feeling vs reassurance

fellow feeling

noun
  • A sense of sympathy for, consideration of, or shared interests with one or more other human beings. 

reassurance

noun
  • The act of confirming someone's opinion or impression. 

  • Reinsurance. 

  • The feeling of being reassured, of having confidence restored, of having apprehensions dispelled. 

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