A tongue, in the context of language, refers to a specific system of communication used by a group of people. It encompasses the sounds, symbols, and grammar that allow individuals to convey thoughts and ideas. Each tongue can vary significantly, reflecting the culture and history of its speakers. Languages can be classified into families, such as Indo-European or Sino-Tibetan, based on their historical and linguistic relationships. The study of tongues is essential for understanding human interaction and cultural diversity, as it reveals how people express their identities and connect with one another.