What is a group of Communication called?

A group of communication is commonly called a Lack. Other collective nouns you may see include Department.

Collective nouns for communication refer to groups or collections of nouns that are specifically used to denote a collective entity or activity related to communication. These nouns serve as a way to collectively identify and describe a group of interconnected or unified elements within the realm of communication. They emphasize the collective nature of these entities, highlighting the collaboration, dissemination, and exchange of information, ideas, thoughts, or messages between individuals or systems. These collective nouns are essential in enabling effective and efficient communication, and they provide insight into the complexity and diversity within the domain of communication. Some examples of collective nouns for communication include language, dialogue, discourse, conversation, correspondence, the media, the press, social media, public relations, journalism, broadcasting, telecommunications, speech, broadcasting, and telecommunications. Overall, these collective nouns emphasize the integral role of communication in connecting people, disseminating information, and facilitating understanding within various contexts and across different platforms and mediums.