Here's why:
* Compact bone: This type is dense and solid, forming the outer layer of bones. It provides strength and support.
* Spongy bone: This type is lighter and has a porous, honeycomb-like structure. It is found inside bones and is filled with red bone marrow, which produces blood cells.
While other connective tissues like cartilage can have varying densities, the terms "compact" and "spongy" are most specifically used to describe the different structures within bone.
