«بَائِنٌ»
Bāʾin may convey separation or manifest clarity.
The first usage concerns something becoming distinct or detached; the second concerns being evident or clear. These are different lexical senses, not simply multiple persons covered by one general term.
In a legal context the same form may bear a technical implication concerning divorce, but that does not justify imposing that implication on every occurrence of the word.
Lesson: a dictionary reveals possible senses; the legal intention depends on evidence and the surrounding utterance.