citizen vs people

citizen and people both are nouns.

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

citizen (noun)	people (noun)
a native or naturalized member of a state or other political community	(plural) any group of human beings (men or women or children) collectively
	the body of citizens of a state or country
	members of a family line
	the common people generally

citizen (verb)	people (verb)
	fill with people
	furnish with people