This is the 1992nd most frequent Turkish word.
sabır
Patience.
Sabır is used as a general concept, referring to the quality of patience.
Sabır, zorlu zamanlarda en güçlü silahtır.
Patience is the strongest weapon in tough times.
Sabırla is used in its adverbial form, specifying the manner of the action.
Ona sabırla yaklaşmalı ve olan biteni anlatmalısın.
You should approach him with patience and explain what happened.
Sabrını refers to the specific possession of patience in this context.