reassuring vs sinister

reassuring

noun
  • reassurance 

adj
  • That reassures; causing comfort or confidence. 

sinister

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

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

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

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