partygoer vs attendant

partygoer and attendant both are nouns.

Word	Noun	Adjective	Verb	Adverb
partygoer	Yes	No	No	No
attendant	Yes	Yes	No	No

As nouns, attendant is a hypernym of partygoer; that is, attendant is a word with a broader meaning than partygoer:

Other hypernyms of partygoer include attendee, attender, meeter.

partygoer (noun)	attendant (noun)
someone who is attending a party	an event or situation that happens at the same time as or in connection with another
	someone who waits on or tends to or attends to the needs of another
	a person who is present and participates in a meeting

partygoer (adjective)	attendant (adjective)
	being present (at a meeting or event, etc.)
	occurring with or following as a consequence