brooding vs reflective

brooding

adj
  • Deeply or seriously thoughtful. 

  • Broody; incubating eggs by sitting on them. 

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

reflective

adj
  • Reciprocal. 

  • Involving reflection. 

  • That reveals or shows; revealing; indicative of. 

  • That reflects, or redirects back to the source. 

  • Pondering, especially thinking back on the past. 

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