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]
(..) Well, thanks for not shooting me when you had the chance. Oh, I'll have more. Yeah, I can see that. We've intercepted the encrypted communications. Joshua Joyce is headed to his factory in Guangzhou, China. Hey, big shot. Your company's in serious trouble. You better have a damn good lawyer. (..)2014 Transformers: Age of Extinction