Parents need to have good 'communication' with their children. [=they need to be able to understand and be understood by their children]
a 'communications satellite' [=a satellite that is used to send signals for television, radio, etc., to people around the world]
('formal') We are 'in communication' by e-mail. [=we are communicating with each other by e-mail]
(..) Multiple satellites are down, and they keep on falling. Define 'multiple satellites. ' - Most of them are gone. Telecommunication systems are dead. Expect a communication blackout at any moment. Kowalski, visual of debris at nine o'clock. - Half of North America just lost their Facebook. Explorer, repeat, expect a communication blackout at any moment. Copy that, Houston. - Explorer, this is Kowalski, confirming visual contact with debris. Debris is from a BSE sat. - Heads up! (..)2013 Gravity