ownership

noun

1. (countable, uncountable)The state of having complete legal control of something; possession; proprietorship.

   “Other evidence of former ownerships such as notice-boards, number plates, and makers' plates, are often discovered unexpectedly. […] It has not been used for many years, and although it was impracticable to photograph the engine in the small confines of the shed it was possible to obtain a picture of the plate which it still carries showing the former ownership.”

   “In the summer, DCC [Devon County Council] transferred ownership of the northern part of the station to NR for a nominal £1, enabling it (and the platform) to become part of the rail network.”

2. (countable, uncountable)Responsibility for or control over something.

   “The successful candidate will take ownership of all internal design projects.”