brooding vs glad

brooding

adj
  • Broody; incubating eggs by sitting on them. 

  • Deeply or seriously thoughtful. 

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

glad

adj
  • Pleased, happy, gratified. 

noun
  • A gladiolus (plant). 

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