glimmer vs unlight

glimmer

noun
  • A faint light; a dim glow. 

  • A faint or remote possibility. 

  • A flash of light. 

verb
  • To shine with a faint, unsteady light. 

unlight

noun
  • The absence of light; darkness. 

adj
  • Not light (“having little weight”). 

verb
  • To alight; dismount 

  • To extinguish, turn off, or dim the light from 

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