Interior:  adj.(lat.interior,-oris).1- Which is the inside, in a space between limits of something.

Architecture: Latin, 'architectura', from the Greek 'arkhitekton - "Art of constructing buildings".

Interior Architecture / Interior Design is a multi-faceted profession in which creative and technical solutions are applied within a structure to achieve a built interior environment.  The interior architecture process follows a systematic and coordinated methodology, including research, analysis and integration of knowledge into the creative process, whereby the needs and resources of the client are satisfied to produce an interior space that fulfills the project goals within the original budget limit as agreed in the project work description.(E.w.a. 2010)