Learn a word: proprietary

proprietary, adjective, /prə'praɪətɛri/

1 

used, made, or sold only by the particular person or company that has the legal right to do so.

a proprietary brand of insecticide.
proprietary software products.
The computer comes with the manufacturer's proprietary software.
a proprietary drug. “Merriam-Webster” is a proprietary name.

2 

relating to who owns something. 
kept private by an owner.

They have proprietary rights to the data.
He has no proprietary interest in the farm (=he does not own any part of it).
The journalist tried to get access to proprietary information.

3 

proprietary behaviour makes it seem that you think you own something or someone. 
of or like that of an owner.

The publisher has proprietary rights [=the rights of an owner] to the manuscript.
The investors have a proprietary interest in the land.

proprietor, noun, /prə'praɪətər/

an owner of a business. 
a person who owns a business or property.

proprietor of the proprietor of a small hotel and restaurant.
She is the proprietor of the store.
a restaurant proprietor.

proprietorship, noun, /prə'praɪətərʃɪp/
The business is a sole proprietorship and not a partnership.
He was given proprietorship of the store.

propriety, noun, /prə'praɪəti/

1 

correctness of social or moral behaviour. 
behavior that is accepted as socially or morally correct and proper.

They discussed the propriety of treating ill children against the wishes of the parents.
They conducted themselves with propriety.
She acted with propriety.
He went beyond the bounds of propriety. [=he acted improperly] 
She conducted herself with propriety.

2 the proprieties (especially British English)    

the accepted rules of correct social behaviour.

the state or quality of being correct and proper.
They debated the propriety of the punishment that he was given.
When attending a wedding, there are certain proprieties that must be observed.
the social proprieties.