mewl vs waul

mewl

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

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

waul

verb
  • To wail, to cry plaintively. 

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