"Distinguishment" is a word in ENGLISH

Observing distinctions; making differences; discriminating.

One who discerns accurately the difference of things; a nice or judicious observer.

The difference between an observed value and the true value of a quantity.

The difference between the observed value of a quantity and that which is taken or computed to be the true …

The tendency in fluids to mix, or become equably diffused, when in contact. It was first observed between fluids of …

An apparatus for observing the phosphorescence produced in different bodies by the action of light, and for measuring its duration.

The difference of the results obtained by observation, and by computation from a formula.

The difference between the mean of several observations and any one of them.