A "concept" is an idea or a mental representation of something. It helps us understand and categorize the world around us. For example, the concept of freedom allows us to think about what it means to be free and how it affects our lives. Concepts can be simple, like color, or complex, like justice, and they form the basis of our thoughts and discussions. In everyday life, we use concepts to communicate effectively. When we talk about happiness, we share a common understanding of what it feels like, even if our experiences differ. Concepts help us connect with others and make sense of our experiences, guiding our actions and decisions.