ornament

(noun) something used to beautify. Synonyms: decoration, ornamentation.

(verb) make more attractive by adding ornament, colour, etc.. Synonyms: decorate, adorn, grace, embellish, beautify. Examples: "Decorate the room for the party." "Beautify yourself for the special day."

(verb) be an ornament to. Example: "Stars ornamented the christmas tree."