explain the difference between sperm the mass noun or singulare tantum which refers to a substance not the count noun which refers to a spermatozoon and semen i want a clear definitive explanation with sources and references if possible because wikipedia does not explain the difference accurately t z august utc since no one wants to or is able to explain i'm gonna write a disambiguation page because the two homonymous words sperm singulare tantum and sperm count noun don't refer to the same concept and since many articles which direct here refer to the mass noun instead of the count noun t z august utc