Indoor
Part of speech: adjective
Definition: Situated in, or designed to be used in, or carried on within the interior of a building.
Example sentence: One of the things I do in my cookbooks is I will do a conversion from outdoor to indoor grilling so you can do it year-round.
Interior
Part of speech: adjective
Definition: having to do with the inner part of somethinghaving to do with the inland parts of a country far from the coasts
Part of speech: noun
Definition: The inside of a building, container, cavern, or other enclosed structure.The inside regions of a country, distanced from from the borders or coasts.The set of all interior points of a set.
Example sentence: Nothing is so discouraging to an actor than to have to work for long hours upon hours in brightly lighted interior sets.