Focus on selecting interior materials, finishes, hardware, furnishings, textiles, drapery/window treatments, paint color, wallpaper and accents. Sourced from: http://chicagohome.donatellibuilders.com/Design-to-build/bid/374642/What-s-the-Difference-between-Architects-and-Interior-Designers
As much as it is clear for one to see that the two fields complement each other beautifully, there is a school of thought that argues that interior design is under architectural jurisdiction. This however is still under debate though interior design has curved a wonderful niche for itself.
Thus, many talented college-bound students have chosen to pursue an interior design education more directly aligned with their passions and interests, even if this might ultimately place them at a disadvantage in the professional and licensing arenas. Sourced from: http://www.di.net/articles/interior-design-and-architecture/
Interior architects must also be aware of federal, state and local building regulations so their designs are up-to-code. Sourced from: http://study.com/articles/Interior_Architect_Job_Description_Duties_and_Requirements.html