private vs inward

private is a noun but inward is not a noun.

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

private (noun)	inward (noun)
an enlisted man of the lowest rank in the Army or Marines

private (adjective)	inward (adjective)
confined to particular persons or groups or providing privacy	relating to or existing in the mind or thoughts
not expressed	directed or moving inward or toward a center
concerning one person exclusively
concerning things deeply private and personal

private (adverb)	inward (adverb)
	toward the center or interior
	to or toward the inside of