X-bar Theory

X-bar Theory is a linguistic framework that explains how words and phrases are structured in sentences. It suggests that every phrase has a core word (called the "head") and can include additional elements like modifiers or complements, arranged in a predictable way. These phrases are organized hierarchically, with each level (or "bar") representing increasing complexity. This system helps linguists understand how different parts of a sentence relate to each other, making the structure of language more systematic and easier to analyze across languages.