grace note vs appoggiatura

grace note and appoggiatura both are nouns.

Word	Noun	Adjective	Verb	Adverb
grace note	Yes	No	No	No
appoggiatura	Yes	No	No	No

As nouns, grace note and appoggiatura are synonyms defined as:

grace note and appoggiatura: an embellishing note usually written in smaller size

Other synonyms of grace note include acciaccatura.

grace note (noun)	appoggiatura (noun)
an embellishing note usually written in smaller size	an embellishing note usually written in smaller size