Definitions are concise explanations of the meanings of words or phrases. They help clarify concepts and ensure that everyone understands the same idea when using specific terms. Definitions can be found in dictionaries, glossaries, and various educational resources, making them essential for effective communication. In addition to words, definitions can apply to broader concepts, such as science, art, or culture. Each of these fields has its own set of definitions that help categorize and explain various elements within them. Understanding definitions is crucial for learning and engaging in discussions across different subjects.