united vs confederate

united is not a noun while confederate is a noun.

Word	Noun	Adjective	Verb	Adverb
united	No	Yes	No	No
confederate	Yes	Yes	Yes	No

united (noun)	confederate (noun)
	a person who joins with another in carrying out some plan (especially an unethical or illegal plan)
	someone who assists in a plot

united (adjective)	confederate (adjective)
characterized by unity; being or joined into a single entity	united in a confederacy or league
of or relating to two people who are married to each other
involving the joint activity of two or more

united (verb)	confederate (verb)
	form a group or unite
	form a confederation with; of nations