dinner vs party

dinner and party both are nouns.

Word	Noun	Adjective	Verb	Adverb
dinner	Yes	No	No	No
party	Yes	No	Yes	No

As nouns, party is a hypernym of dinner; that is, party is a word with a broader meaning than dinner:

dinner (noun)	party (noun)
the main meal of the day served in the evening or at midday	an occasion on which people can assemble for social interaction and entertainment
a party of people assembled to have dinner together	a gathering of people for pleasure
	an organization to gain political power
	a band of people associated temporarily in some activity
	a person involved in legal proceedings

dinner (verb)	party (verb)
	have or participate in a party