sclera vs white bread

sclera

noun
  • The white of the eye; the tough outer coat of the eye that covers the eyeball except for the cornea. 

white bread

noun
  • A white person, a person of European descent, a person who 'acts white'. 

  • Bread made from white flour. 

adj
  • Bland, boring; flavorless. 

  • Of or relating to white people. 

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