Interior Architecture - The spatial art of design, form and practice, interior architecture is the process through which the interiors of buildings are designed, concerned with all aspects of human use of structural spaces. Put simply, Interior Architecture is the design of an interior in architectural terms.
Interior Design - The art and science of understanding people's behavior to create functional spaces within a structure. This includes applying creative and technical solutions within a structure that are functional, attractive and suit the occupants' lifestyle.
Interior Decoration and Styling - Furnishing or adorning of a space with fashionable or beautiful things. Includes the selection of furniture, soft furnishings, decor and art.