1. Can be replaced with any noun or even be added in a sentence after a noun. Usually a substitute for words during a conversation about an inappropriate topic in a public place.
Me - “Hey look at that meeting of Raccoons, there was only two before”
Friend - “that’s more than a meeting mate, that’s a Business of TrashPandas Now”
Me - “Huh?”
Friend - “any more than three makes a business, and they’re making big plans by the look of ‘em”
I take my dog out for a walk every day every day so it can do its business, or ‘Sorry brother, before I kill ya, I just want ya to know that it’s only business, nothing personal!’.