lustrous vs neon

lustrous

adj
  • As if shining with a brilliant light; radiant. 

  • Having a glow or lustre. 

neon

adj
  • That resembles a neon light; extremely bright; fluorescent 

noun
  • The chemical element (symbol Ne) with an atomic number of 10. The second of the noble gases, it is a colourless, odorless inert gas. 

  • Neon signs or lights, collectively. 

  • A neon tetra fish. 

  • A form or sample of the element. 

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