political system vs party

political system and party both are nouns.

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

political system (noun)	party (noun)
the members of a social organization who are in 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 system (verb)	party (verb)
	have or participate in a party