squall vs ululate

squall

verb
  • To cry or wail loudly. 

noun
  • A loud cry or wail. 

  • A sudden storm, as found in a squall line. 

  • A squall line, multicell line, or part of a squall line. 

ululate

verb
  • to howl loudly or prolongedly in lamentation or joy 

  • to produce a rapid and prolonged series of sharp noises with one's voice. 

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