Interior paint shouldn't be used outside. It doesnt have the uv protectors and the extra outside protectors that exterior paints have.
Oil paint?The difference between them is weatherability - interior is going to deteriorate far faster than exterior if used outdoors, that is all.
No, both types of paint have different properties and uses. Examples of interior paint can include flat, semi-gloss, gloss and eggshell. For more inforation, look here:...
No interior paint is not designed for use in high moisture areas even if applying exterior pain over it. Common sense should tell you that.
painting for/on the inside of one's house