graffito vs decoration

graffito and decoration both are nouns.

Word	Noun	Adjective	Verb	Adverb
graffito	Yes	No	No	No
decoration	Yes	No	No	No

As nouns, decoration is a hypernym of graffito; that is, decoration is a word with a broader meaning than graffito:

Other hypernyms of graffito include ornament, ornamentation.

graffito (noun)	decoration (noun)
a rude decoration inscribed on rocks or walls	the act of decorating something (in the hope of making it more attractive)
	something used to beautify
	an award for winning a championship or commemorating some other event