inward vs interior

inward is not a noun while interior is a noun.

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

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

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

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