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 approach language like a mathematician. You know that, right? I won't take that as a compliment. Yeah, well it is. And... I watch you steer us around these communication traps that I didn't even know existed. So, why... I guess that's why I'm single. Trust me, you can understand (..)2016 Arrival
(..) - A visual aid. Look, I'm never gonna be able to speak their words, if they ARE talking. But they might have some sort of written language or basis for... visual communication. OK. Let's get started. Human. Human. I'm human. I'm human. (..)2016 Arrival