is a specific kind of: body substance.

is a broader term that covers: aqueous humor, aqueous humour | vitreous body, vitreous humor, vitreous humour | endolymph | perilymph | ECF, extracellular fluid | intracellular fluid | juice, succus | karyolymph | milk | amnionic fluid, amniotic fluid, waters | blood | blood serum, serum | chyle | lymph | come, cum, ejaculate, seed, semen, seminal fluid | ink | secretion | black bile, melancholy | choler, yellow bile | lochia | festering, ichor, purulence, pus, sanies, suppuration | cerebrospinal fluid, spinal fluid ... show more.

derivation: humoral.