ache vs aspiration

ache

verb
  • To cause someone or something to suffer pain. 

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

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

aspiration

noun
  • The act of aspiring or ardently desiring; an ardent wish or desire, chiefly after what is elevated or spiritual (with common adjunct adpositions being to and of). 

  • The action of aspirating. 

  • A burst of air that follows the release of some consonants. 

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