ache for vs long for

ache for

verb
  • To desire or want something, or someone, very much. 

long for

verb
  • To have a desire for (a thing or an event). 

  • To miss (someone). 

adj
  • likely to remain for a long time 

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