masque vs masquerade party

masque and masquerade party both are nouns.

Word	Noun	Adjective	Verb	Adverb
masque	Yes	No	No	No
masquerade party	Yes	No	No	No

As nouns, masque and masquerade party are synonyms defined as:

masque and masquerade party: a party of guests wearing costumes and masks

Other synonyms of masque include mask, masquerade.

masque (noun)	masquerade party (noun)
a party of guests wearing costumes and masks	a party of guests wearing costumes and masks