Ownership

Ownership is the primary Real Right in an item.
It allows the holder to "use and dispose of the item except as is prevented by law or paction" (Erskine).
It is "Unlimited" except where limited by the other real rights, and law
For corporeal things, the item itself stands as the "object of ownership"; whether incorporeal sare "owned" or just "held" is a mater of debate (Gretton says held, Reid says owned).
The key powers included in ownership are the right to transfer ownership, and any residual rights not otherwise granted in the property.
==Multiple Owners==
Ownership can be by one person, or in common, but there is only ever a single ownership right in a thing - co-owners own a share of the whole thing, not parts of the thing.
All owners therefore can make ordinary use of shared property, and no owner may claim excessive benefit from the shared property. In most cases repairs and alterations require unanimous consent (Tenements are the key exception)
Multiple Ownership does not end with death. Shares may be sold or transfered without consent of the other owners (although they are of likely questionable value).
As per Collins v Sweeney One owner cannot force another owner to sell to them.