Bone marrow and Connective tissue

Bone marrow noun - The fatty network of connective tissue that fills the cavities of bones.

Connective tissue and bone marrow are semantically related. In some cases you can use "Connective tissue" instead a noun phrase "Bone marrow".

Connective tissue noun - Tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments.

Bone marrow and connective tissue are semantically related. Sometimes you can replace phrase "Bone marrow" with "Connective tissue", this phrases are similar.