A dialect is distinguished by its vocabulary, grammar, and pronunciation (phonology, including prosody). Where a distinction can be made only in terms of pronunciation (including prosody, or just prosody itself), the term accent may be preferred over dialect. Other types of speech varieties include jargons, which are characterized by differences in lexicon (vocabulary); slang; patois; pidgins; and argots.
Try to answer this question if possible (otherwise reply "unanswerable"): Along with jargon and pronunciation, how is a dialect distinguished?
unanswerable