Nouns

(n)inside, interiorthe region that is inside of something
(n)inside, interiorthe inner or enclosed surface of something

Adjectives

(a)interiorsituated within or suitable for inside a building“an interior scene”, “interior decoration”, “an interior bathroom without windows”
(s)home, interior, internal, nationalinside the country“the British Home Office has broader responsibilities than the United States Department of the Interior”, “the nation's internal politics”
(s)inner, interior, internallocated inward“Beethoven's manuscript looks like a bloody record of a tremendous inner battle” (Leonard Bernstein), “she thinks she has no soul, no interior life, but the truth is that she has no access to it” (David Denby), “an internal sense of rightousness” (A.R.Gurney,Jr.)
(s)interiorinside and toward a center“interior regions of the earth”
(s)interior, midland, upcountryof or coming from the middle of a region or country“upcountry districts”