A roommate is a person with whom one shares a living facility such as a room or dormitory except when being family or romantically involved. Similar terms include dorm-mate, suite-mate, housemate, or flatmate. Flatmate is the term most commonly used in New Zealand, when referring to the rental of an unshared room within any type of dwelling. Another similar term is sharemate. A sharehome is a model of household in which a group of usually unrelated people reside together, including lease-by-room arrangements. The term generally applies to people living together in rental properties rather than in properties in which any resident is an owner occupier. In the United Kindom, the term "roommate" means a person living in the same bedroom, whereas in the United States and Canada, "roommate" and "housemate" are used interchangeably regardless whether a bedroom is shared, although it is common in US universities that having a roommate implies sharing a room together. This article uses the term "roommate" in the US sense of a person one shares a residence with who is not a relative or significant other. The informal term for roommate is roomie, which is commonly used by university students and members of the younger generation.