The term "philosophical concepts" refers to ideas and theories that are derived from philosophical thinking, reasoning, and inquiry. These concepts often deal with fundamental questions about reality, knowledge, values, reason, and human nature. They can encompass a wide range of topics such as metaphysics, epistemology, ethics, politics, and aesthetics. Philosophers use these concepts to explore different perspectives, challenge assumptions, and develop arguments in an attempt to understand the world around them and the human experience.