mewl vs threnode

mewl

noun
  • A soft cry or whimper; an act of mewling. 

verb
  • To cry weakly with a soft, high-pitched sound; to whimper; to whine. 

threnode

noun
  • A threne, or threnody; a dirge; a funeral song. 

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