luster: noun
1: a glow of reflected light: SHEEN
2a: a glow of light from within: LUMINOSITY
b: an inner beauty: RADIANCE
3: a superficial appearance of excellence
4a: a glass pendant
b: a decorative object hung with glass pendants
5 chiefly British: a fabric with cotton warp and a filling of wool, mohair or alpaca
6: LUSTERWARE
lustre: verb
1: to give lustre or distinction to
2: to coat or treat with a substance that imparts luster
luster: noun (2)
: a period of five years: LUSTRUM
Source: Merriam-Webster Dictionary
