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]
(..) You have to call her. Where the pure angel merges with the antic sphinx... I'm telling you. Call her. Listen, Driss. I'm better at written communication. Unbelievable. Fine, but I'm gonna look for her phone number because this is stressing me out. Hey! She's from Dunkerque... (..)2011 The Intouchables