ache vs pity

ache

verb
  • To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed. 

  • To cause someone or something to suffer pain. 

noun
  • Continued dull pain, as distinguished from sudden twinges, or spasmodic pain. 

pity

verb
  • To make (someone) feel pity; to provoke the sympathy or compassion of. 

  • To feel pity for (someone or something). 

noun
  • Something regrettable. 

  • A feeling of sympathy at the misfortune or suffering of someone or something. 

intj
  • Short form of what a pity. 

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