“Culture is communication, communication is culture.”
Communication has an enormous place in culture. The way we talk to others is how we can connect and make culture. Such as, how two doctors would talk to each other, knowing they would both understand what they are talking about, other than when a doctor would be talking to their patient. They would tend to talk to the patient using more common terms that the patient would understand better. The jargon of a group of people is what separates them from the others.