An Interior Designer is qualified to alter the space they are working with. I.e. changing the layout of an interior including walls, etc. An Interior Decorator will work within the existing space of...
Style is the way you express the design, its design that creates different types of styles, style can be refered as sort of taste and mood in design, but the word design it self is very general.
The difference is this:Interior Design- Design outfits, rooms etc. (i read it's unstable job) Design up close and right then and there!Interaction Design- Digital/ computer designing (i read it is...
Architectural interior design- means that you design building e.g decorate house outside.Interior design- means that you design rooms e.g. you decorate hotels, rooms etc.