「precedence」の語源 www.etymonline.com late 15c., "a being a precedent, previous occurrence or existence," from precedent (n.) + -ence, or from Medieval Latin praecedentia, from Latin praecedent-, past-participle stem of praecedere. Meani…

「concern」の語源。 early 15c., of persons, "to perceive, distinguish;" also, of things, "to refer to, relate to, pertain to," from Old French concerner (15c.) and directly from Medieval Latin concernere "concern, touch, belong to," figura…

「discern」の語源。 www.etymonline.com "perceive or recognize the difference or distinction between (two or more things);" also "distinguish (an object) with the eyes, see distinctly, behold;" also "perceive rationally, understand;" late 1…