confidant
6.indicating knowledge of personal details that only a close confidant could have.
7.It can be a nodding acquaintance, a comrade, a confidant, a partner, a playmate, an intimate colleague, etc.
8.Rockets General Manager Daryl Morey had said all along he was confidant he could keep Hayes with Houston.
9.The very popular General La Fayette, captain of the National Guard of Paris and confidant of the king, took his oath to uphold the Constitution, as did King Louis XVI.
10.The word, friend, covers a wide range of meanings. It can be a nodding acquaintance, a comrade, a confidant, a partner, a playmate, an intimate colleague, etc.

