This edited volume, based on papers presented at the 2017 Georgetown
University Round Table on Language and Linguistics (GURT), approaches
the study of language variation from a variety of angles. Language
variation research asks broad questions such as, "Why are languages'
grammatical structures different from one another?" as well as more
specific word-level questions such as, "Why are words that are
pronounced differently still recognized to be the same words?" Too
often, research on variation has been siloed based on the particular
question--sociolinguists do not talk to historical linguists, who do not
talk to phoneticians, and so on. This edited volume seeks to bring
discussions from different subfields of linguistics together to explore
language variation in a broader sense and acknowledge the complexity and
interwoven nature of variation itself.