AQA A-level English Language – Language Change Practice Test

Orthography is about the written form of language—the rules and conventions for spelling in a language's standard writing system. That makes the conventional spelling system the best fit, because it captures how words are written and spelled in everyday use. Punctuation rules deal with sentence marks and structure, which are part of writing but not the primary domain of orthography. The pronunciation guide relates to how words sound, not how they are written, and the vocabulary lexicon concerns word meanings and forms rather than their written representation.