Liquid body substance and Spinal fluid

Liquid body substance noun - The liquid parts of the body.

Spinal fluid and liquid body substance are semantically related. In some cases you can replace phrase "Spinal fluid" with "Liquid body substance", this phrases are similar.

Spinal fluid noun - Clear liquid produced in the ventricles of the brain; fills and protects cavities in the brain and spinal cord.

Liquid body substance and spinal fluid are semantically related. You can use "Liquid body substance" instead a noun phrase "Spinal fluid".