All interests in a particular property may be owned by one person alone or tow or more persons whcihc may be concurrent interests in the same property. When two or more persons own an interest in real property, they are co-owners  and may hold the property in fee simple, as a life estate or as a lesser estates.

These are the co-ownerships types 

Joint Tenancy : A form of co-ownership that gives each tenant equal interest and equal rights in the property, including the right of survivorship.