Constituency Parsing is a natural language processing technique that analyzes the grammatical structure of a sentence. It breaks down a sentence into its sub-phrases, or constituents, which can include nouns, verbs, adjectives, and other parts of speech. This helps in understanding how different parts of a sentence relate to each other. The output of constituency parsing is often represented as a tree structure, where each node corresponds to a constituent. This visual representation makes it easier to see the hierarchical relationships within the sentence, aiding in tasks like machine translation and information extraction.