brooding vs compelling

brooding

adj
  • Deeply or seriously thoughtful. 

  • Broody; incubating eggs by sitting on them. 

noun
  • A spell of brooding; the time when someone broods. 

compelling

adj
  • Strongly or irresistibly evoking interest or attention. 

  • Forceful. 

noun
  • An act of compulsion; an obliging somebody to do something. 

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