Substance is a broad term that can refer to a variety of things. NATURE is the physical world and its phenomena, such as plants, animals, and the environment. BASE is a fundamental or essential part of something. DRIFT is a gradual change in direction or position. ELEMENT is a substance that cannot be broken down into simpler substances. ESTATE is a large area of land with buildings, owned by a single person or organization. BEING is the state of existing. MASS is a large amount of MATTER with no definite shape. NUB is a small piece or part of something. BODY is a physical object with MASS and volume. GIST is the main point or idea of something. MEAT is the flesh of an animal used as food. PITH is the central or most important part of something. DEPTH is the distance from the top to the bottom of something. STUFF is material or objects used for a particular purpose. TENOR is the general meaning or main idea of something. MATTER is anything that has MASS and occupies space.