feels vs heartbreaking

feels

noun
  • Feelings, emotions 

adj
  • Synonym of emotional 

heartbreaking

noun
  • The breaking of a heart; great grief, anguish or distress. 

adj
  • That causes great grief, anguish or distress. 

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