aching vs smarting

aching

adj
  • That aches; continuously painful; that causes pain. 

noun
  • The feeling of an ache; a dull pain. 

smarting

adj
  • Painful, sore. 

  • Experiencing emotional pain or embarrassment. 

noun
  • A sensation that smarts or stings. 

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