interior vs inward

interior is a noun but inward is not a noun.

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

interior (noun)	inward (noun)
the inner or enclosed surface of something
the region that is inside of something

interior (adjective)	inward (adjective)
situated within or suitable for inside a building	relating to or existing in the mind or thoughts
inside the country	directed or moving inward or toward a center
of or coming from the middle of a region or country
inside and toward a center
located inward

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