Criticism (krt-sz'm), n.
1. The rules and principles which regulate the practice of the critic; the art of judging with knowledge and propriety of the beauties and faults of a literary performance, or of a production in the fine arts; as, dramatic criticism. The elements ofcriticism depend on the two principles of Beauty and Truth, one of which is the final end or object of study in every one of its pursuits: Beauty, in letters and the arts; Truth, in history and sciences. Brande & C. By criticism, as it was first instituted by Aristotle, was meant a standard of judging well. Dryden.
2. The act of criticising; a critical judgment passed or expressed; a critical observation or detailed examination and review; a critique; animadversion; censure. About the plan of "Rasselas" little was said by the critics; and yet the faults of the plan might seem to invite severe criticism. Macaulay.
Shades of meaning
Fernald has no entry of its own for criticism; he lists it under reproof.
Where he writes about it:
Blame, censure, and disapproval may either be felt or uttered; comment, criticism, rebuke, reflection, reprehension, and reproof are always expressed. — from reproof
Comment and criticism may be favorable as well as censorious; they imply no superiority or authority on the part of him who utters them; nor do reflection or reprehension, which are simply turning the mind back upon what is disapproved. — from reproof