publicly vs public

publicly is not a noun while public is a noun.

Word	Noun	Adjective	Verb	Adverb
publicly	No	No	No	Yes
public	Yes	Yes	No	No

publicly (noun)	public (noun)
	people in general considered as a whole
	a body of people sharing some common interest

publicly (adjective)	public (adjective)
	not private; open to or concerning the people as a whole
	affecting the people or community as a whole

publicly (adverb)	public (adverb)
in a manner accessible to or observable by the public; openly
by the public or the people generally