Another: A particular street address only maps to one person, entity, or family. Counterexample: Giant skyscraper with a zillion tenants, each in a different suite. Or a giant apartment building. Etc.

Still another: One particular suite address only maps to one person, entity, or family. Counterexample: Any of thousands of commercial mailbox-rental / package-shipping stores in US strip malls, which tend to have suite numbers (within the mall) and possibly hundreds of tenants, all at one suite.