brooding vs sinister

brooding

adj
  • Deeply or seriously thoughtful. 

  • Broody; incubating eggs by sitting on them. 

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

sinister

adj
  • Inauspicious, ominous, unlucky, illegitimate (as in bar sinister). 

  • On the left side of a shield from the wearer's standpoint, and the right side to the viewer. 

  • Evil or seemingly evil; indicating lurking danger or harm. 

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