political party vs party

political party and party both are nouns.

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

As nouns, political party and party are synonyms defined as:

political party (noun)	party (noun)
an organization to gain political power	an occasion on which people can assemble for social interaction and entertainment
	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

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