aphorism vs epitaph

aphorism

verb
  • To speak or write aphorisms. 

noun
  • A concise, terse, laconic, or memorable expression of a general truth or principle. 

epitaph

verb
  • To write or speak after the manner of an epitaph. 

  • To commemorate by an epitaph. 

noun
  • An inscription on a gravestone in memory of the deceased. 

  • A poem or other short text written in memory of a deceased person. 

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