Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.

Corballis and Suddendorf (2007) and Tomasello and Rakoczy (2003) highlight the role of language in making humans unique among animals. By examining language's development and cognitive impacts, one can appreciate its crucial role in human interaction and thought processes.

Language involves speaking, writing, or signing to communicate with others. It is essential for listening, reading, and writing. Additionally, language shapes our inner thoughts and self-dialogue. For instance, when experiencing a guilty conscience, your inner voice questions your actions using your native language.

Fundamentally, language's unique characteristics include its symbolic nature and its structure, which is governed by grammar. These elements distinguish human language from other animal communication systems. Understanding these characteristics helps us explore the connections between language and cognition, shedding light on how language influences our thinking and perception.