Interior design is a multi-faceted profession in which creative and technical solutions are applied within a structure to achieve a built interior environment.
An opinion or belief
A concept or mental impression
A thought or suggestion as to a possible course of action
mind: your intention; what you intend to do; "he had in mind to see his old teacher"; "the idea of the game is to capture all the pieces"
the content of cognition; the main thing you are thinking about; "it was not a good idea"; "the thought never entered my mind"
a personal view; "he has an idea that we don't like him"