This is the 431st most frequent Bulgarian word.
граница
The Bulgarian word "граница" means "border" or "boundary" in English.
In this case, "граница" metaphorically refers to the limits of politeness or appropriateness.
Не преминавай границите на добрия вкус.
Do not cross the boundaries of good taste.
Here, "граница" describes the extents or limits of human capability, again used metaphorically.
Границите на човешките възможности са изпитвани от векове.
The boundaries of human abilities have been tested for centuries.
Here, "граница" is used in the context of an official and physical border between two countries.