sgraffito vs ornamentation

sgraffito and ornamentation both are nouns.

Word	Noun	Adjective	Verb	Adverb
sgraffito	Yes	No	No	No
ornamentation	Yes	No	No	No

As nouns, ornamentation is a hypernym of sgraffito; that is, ornamentation is a word with a broader meaning than sgraffito:

sgraffito: a ceramic or mural decoration made by scratching off a surface layer to reveal the ground
ornamentation: something used to beautify

Other hypernyms of sgraffito include decoration, ornament.

sgraffito (noun)	ornamentation (noun)
a ceramic or mural decoration made by scratching off a surface layer to reveal the ground	the act of adding extraneous decorations to something
	something used to beautify
	the state of being ornamented