private vs public

private and public both are nouns.

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

private (noun)	public (noun)
an enlisted man of the lowest rank in the Army or Marines	people in general considered as a whole
	a body of people sharing some common interest

private (adjective)	public (adjective)
confined to particular persons or groups or providing privacy	not private; open to or concerning the people as a whole
not expressed	affecting the people or community as a whole
concerning one person exclusively
concerning things deeply private and personal