bad eye vs grin

bad eye

noun
  • A threatening or disapproving glance. 

  • A stare that is superstitiously supposed to be harmful; the evil eye. 

grin

verb
  • To grin as part of producing a particular facial expression, such as a smile or sneer. 

  • To express by grinning. 

  • To smile, parting the lips so as to show the teeth. 

noun
  • A smile in which the lips are parted to reveal the teeth. 

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