quality:corruption, linguistic:voice_change
An orthography is a set of conventions for writing a language, including norms of spelling, punctuation, word boundaries, capitalization, hyphenation, and emphasis.

Most national and international languages have an established writing system that has undergone substantial standardization, thus exhibiting less dialect variation than the spoken language. These processes can fossilize pronunciation patterns that are no longer routinely observed in speech (e.g., "would" and "should"); they can also reflect deliberate efforts to introduce variability for the sake of national identity, as seen in Noah Webster 's efforts to introduce easily noticeable differences between American and British spelling (e.g., "honor" and "honour").

Orthographic norms develop through social and political influence at various levels, such as encounters with print in education, the workplace, and the state. Some nations have established language academies in an attempt to regulate aspects of the national language, including its orthography—such as the Académie Française in France and the Royal Spanish Academy in Spain. No such authority exists for most languages, including English. Some non-state organizations, such as newspapers of record and academic journals, choose greater orthographic homogeneity by enforcing a particular style guide or spelling standard such as Oxford spelling.