What is the opposite word for interior?

The opposite word for interior is exterior, which means outside, outer part, or outer surface. Interior means inside, inner part, so exterior is direct antonym meaning outside part. For example, interior of house is inside rooms, exterior of house is outside walls, yard, and facade. Interior paint is for inside, exterior paint is for outside. Other opposites depending on context include outside, outer, external, outward, outer side, and outdoors. For adjective interior meaning inner, opposite is outer, external, outside, or outward. For noun interior meaning inside space, opposite is outside, exterior, outer area, or outdoors. In geography, interior meaning inland, opposite is coast, coastline, or exterior region near border. In anatomy, interior meaning internal organs, opposite is exterior meaning skin and outer features. So main antonym is exterior, which is used in architecture, design, and general language as opposite pair, as in interior and exterior design, interior and exterior walls, interior and exterior spaces. If you say interior, opposite is exterior, and if you say inside, opposite is outside.