secern

(transitive) (by extension) To separate (something from other things) in the mind; to discriminate, to distinguish.

(intransitive) Of a person or thing: to become separated from others.

(transitive) (archaic) To separate or set apart (someone or something from other persons or things).

(intransitive) (physiology, rare) To secrete a substance.

(transitive) (physiology, archaic) Synonym of secrete (“to extract or separate (a substance) from the blood, etc., for excretion or for the fulfilling of a physiological function”).