enamel vs ornament

enamel and ornament both are nouns.

Word	Noun	Adjective	Verb	Adverb
enamel	Yes	No	Yes	No
ornament	Yes	No	Yes	No

As verbs, ornament is a hypernym of enamel; that is, ornament is a word with a broader meaning than enamel:

Other hypernyms of enamel include adorn, beautify, decorate, embellish, grace.

enamel (noun)	ornament (noun)
any smooth glossy coating that resembles ceramic glaze	something used to beautify
a paint that dries to a hard glossy finish
hard white substance covering the crown of a tooth
a colored glassy compound (opaque or partially opaque) that is fused to the surface of metal or glass or pottery for decoration or protection

enamel (verb)	ornament (verb)
coat, inlay, or surface with enamel	make more attractive by adding ornament, colour, etc.
	be an ornament to