This document discusses linguistics and compares it to philology. It defines linguistics as the scientific study of language, including sounds, words, and grammar. Philology refers to the study of written records and literature. The document also outlines some key classifications within linguistics, including synchronic vs diachronic descriptions, theoretical vs applied linguistics, and microlinguistics vs macrolinguistics. It establishes that linguistics aims to understand the nature and structure of language and communication. The final section lists some key branches of linguistics such as phonetics, phonology, morphology, syntax, semantics, and pragmatics.