Blood serum and Liquid body substance

Blood serum noun - An amber, watery fluid, rich in proteins, that separates out when blood coagulates.

Liquid body substance and blood serum are semantically related. In some cases you can use "Liquid body substance" instead a noun phrase "Blood serum".

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

Blood serum and liquid body substance are semantically related. Sometimes you can replace phrase "Blood serum" with "Liquid body substance", this phrases are similar.