brooding vs fervid

brooding

adj
  • Deeply or seriously thoughtful. 

  • Broody; incubating eggs by sitting on them. 

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

fervid

adj
  • Heated, emotional or zealous. 

  • Intensely hot; radiating with energy. 

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