to exchange · exchange · communication · interaction · to have social contact (with sb)

If you want to learn Chinese well, you should communicate with Chinese people more often.

Gestures are very important in human communication.

The dolphin and trainer communicated much better than we expected.

Language is the means by which people communicate with others.

Businesses often have a list of 5-10 'mission statements' featured in their brochures, on their websites or hanging in their office detailing the values they hold as a form of communication to their employees, their clients and the public.