mutual
US /ˈmjuː.tʃu.əl/
UK /ˈmjuː.tʃu.əl/

1.
experienced or felt by each of two or more parties about the other; reciprocal
:
•
Their respect for each other was mutual.
•
They had a mutual understanding.
2.
held in common by two or more parties
:
•
They found a mutual friend who could introduce them.
•
The decision was made for their mutual benefit.