(1):

(n.) The act of discriminating, distinguishing, or noting and marking differences.

(2):

(n.) The state of being discriminated, distinguished, or set apart.

(3):

(n.) The arbitrary imposition of unequal tariffs for substantially the same service.

(4):

(n.) The quality of being discriminating; faculty of nicely distinguishing; acute discernment; as, to show great discrimination in the choice of means.

(5):

(n.) That which discriminates; mark of distinction.