alighten vs leam

alighten

verb
  • To make light; to illuminate or brighten. 

  • To lighten; to reduce in weight or heaviness. 

  • To alight, to dismount or get down from. 

  • To alight; to land, to descend and rest. 

leam

verb
  • To gleam; shine; glow. 

noun
  • A cord or strap for leading a dog. 

  • A gleam or flash of light; a glow or glowing. 

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