Ownership of something is the state of owning it.
On January 23rd, America decided to relax its rules on the foreign ownership of its airlines.
...the growth of home ownership in Britain...
1. the relation of an owner to the thing possessed; possession with the right to transfer possession to others
2. the act of having and controlling property
3. the state or fact of being an owner
The family possessed documents that proved their right to ownership.
When a company is created, the founders will get shares, which represent ownership in the venture.
The site is under customary land ownership and management.
The matter in dispute over trifles is the ownership of the house.
Land acquirement is the transfer of ownership between the nation and the collective.