This document discusses language variation and dialects. It defines language varieties as forms of language that change based on social factors like region, social class, individual, and situation. A dialect is a language variety spoken by a speech community that is distinguished by systematic phonological, lexical and grammatical features from other varieties of the same language. An idiolect refers to the speech variety of an individual speaker. Dialects can be regional, based on geographical area, temporal based on historical stage, or social/sociolects based on social class. Factors like social situation, occupation, age, geography, education, gender, social status, and ethnicity can contribute to language variation. All languages have dialects and everyone speaks at least one