Whats the difference between sardonic and sarcastic

Sardonic doesn't implicate the use of irony;• facetious is humorous or jesting inappropriately.[adjective] disdainfully or skeptically humorous :Sarcastic writing is often characterized as being mocking and negative.What is the difference between being sarcastic and sardonic?

3.one can apologize for a sarcastic remark to pacify someone, but sardonic remarks are often to oneself and, thus, cannot be apologized for.2.the main feature of sarcasm is that it is laced with irony.Sarcastic persons are often looked upon as social misfits.1.sarcastic remarks and sardonic remarks have similar but different meanings.'the scornful, ferocious, sardonic grin of a bloody ruffian.';

The difference is the type of language used:A sarcastic response is less funny than a facetious response and more bitter and harsh.Sardonic is laced with a cynical attitude.Like sarcasm, it intends to hurt.Characterized by bitter or scornful derision;

Given to the use of sarcasm;Characterized by, or of the nature of, sarcasm;The main difference between sarcastic and sardonic is that being sarcastic frequently alludes to making sharp, harsh, cutting comments or insults to pass on scorn while being sardonic alludes to being critical, and comical despite affliction.Saying things that are the opposite of what you mean, in order to make an unkind joke or to show that you are annoyed.