This document discusses the nature of language, dialect, and accent. It defines language and dialect, noting that dialects are varieties of a language that are mutually intelligible. Dialects differ based on region or social factors rather than linguistic ones. Accent refers to differences in pronunciation between varieties. Dialect continuum is used to show how dialects gradually change between geographic areas. Linguistic variables are linguistic items that have variant forms based on non-linguistic factors like age, status, or situation.