As a verb:
* Posiadać - This is the most common and general term for "to own" something.
* Właścic - This is the verb "to own" specifically in the sense of being the legal owner of something.
* Posiadać na własność - This literally translates to "to possess as one's own" and emphasizes ownership.
As an adjective:
* Własny - This means "own" or "one's own" and is used to describe something that belongs to someone.
* Posiadany - This is the past participle of "posiadać" and can be used to describe something that is owned.
As a noun:
* Własność - This means "ownership" or "property."
Here are some examples of how to use these words:
* Posiadam samochód. (I own a car.)
* Właściciel sklepu jest bardzo miły. (The owner of the shop is very nice.)
* To jest moja własna książka. (This is my own book.)
* Ten dom jest posiadany przez rodzinę Smithów. (This house is owned by the Smith family.)
* Posiadanie domu to duży wydatek. (Owning a house is a big expense.)
The best word to use will depend on the specific situation and the meaning you want to convey.