conspirator vs confederacy

conspirator and confederacy both are nouns.

Word	Noun	Adjective	Verb	Adverb
conspirator	Yes	No	No	No
confederacy	Yes	No	No	No

conspirator (noun)	confederacy (noun)
a member of a conspiracy	a secret agreement between two or more people to perform an unlawful act
	a union of political organizations
	a group of conspirators banded together to achieve some harmful or illegal purpose