A syntax tree is a visual representation of the grammatical structure of a sentence. It illustrates how words group together to form phrases and how those phrases combine to create the overall meaning of the sentence. Each branch of the tree represents a different part of the sentence, such as the subject, verb, and object. In linguistics, syntax trees help analyze the relationships between words and phrases. They are often used in the study of grammar and linguistics to clarify how sentences are constructed. By breaking down a sentence into its components, syntax trees make it easier to understand complex structures.