citizen vs freeperson

citizen and freeperson both are nouns.

Word	Noun	Adjective	Verb	Adverb
citizen	Yes	No	No	No
freeperson	Yes	No	No	No

As nouns, freeperson is a hyponym of citizen; that is, freeperson is a word with a more specific, narrower meaning than citizen:

citizen: a native or naturalized member of a state or other political community
freeperson: a person who is not a serf or a slave

Other hyponyms of citizen include active citizen, civilian, private citizen, repatriate, thane, elector, voter.

citizen (noun)	freeperson (noun)
a native or naturalized member of a state or other political community	a person who is not a serf or a slave