is a specific kind of: fool, muggins, sap, saphead, tomfool.

derivation: blunder, boob, drop the ball, goof^v1, sin | anserine, dopey, dopy, foolish, gooselike, goosey, goosy, jerky | blockheaded, boneheaded, duncical, duncish, fatheaded, loggerheaded, thick, thick-skulled, thickheaded, wooden-headed | buffoonish, clownish, clownlike, zany | goofy, silly, wacky, whacky, zany.

is a specific kind of: comedian, comic.

is a broader term that covers: harlequin | fool, jester, motley fool | whiteface | zany.

instances of which are: Emmett Kelly, Kelly, Weary Willie.

derivation: antic, clown, clown around | blunder, boob, drop the ball, goof^v1, sin | goofy, silly, wacky, whacky, zany.

is a specific kind of: breach, break, go against, infract, offend, transgress, violate.

derivation: bloomer, blooper, blunder, boner, boo-boo, botch, bungle, flub, foul-up, fuckup, pratfall | blunderer, botcher, bumbler, bungler, butcher, fuckup, fumbler, sad sack, stumbler | buffoon, clown, goofⁿ², goofball, merry andrew | boob, booby, dope, dumbbell, dummy, pinhead | bozo, cuckoo, fathead, goofⁿ¹, goofball, goose, jackass, twat, zany.