glower vs optics

glower

noun
  • That which glows or emits light. 

  • An angry glare or stare. 

verb
  • To look or stare with anger. 

optics

noun
  • The light-related aspects of a device. 

  • Perception, image, public relations, especially in politics. 

  • The physics of light and vision. 

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