* Noun: When referring to the inside of something, like a house or a car.
* Example: "The interior of the castle was beautifully decorated."
* Adjective: When describing something as being on the inside.
* Example: "The interior walls were painted a bright yellow."
* Verb: In rare cases, it can be a verb meaning to decorate the inside of something.
* Example: "The designer interiored the entire hotel."
It's important to understand the context to determine which part of speech "interior" is acting as.