A written language is the representation of a language by means of writing. This involves the use of visual symbols, known as graphemes, to represent linguistic units such as phonemes, syllables, morphemes, or words. However, written language is not merely spoken or signed language written down, though it can approximate that. Instead, it is a separate system with its own norms, structures, and stylistic conventions, and it often evolves differently than its corresponding spoken or signed language.
Written languages serve as crucial tools for communication, enabling the recording, preservation, and transmission of information, ideas, and culture across time and space. The orthography of a written language comprises the norms by which it is expected to function, including rules regarding spelling and typography. A society's use of written language generally has a profound impact on its social organization, cultural identity, and technological profile.