howler vs botch

howler and botch both are nouns.

Word	Noun	Adjective	Verb	Adverb
howler	Yes	No	No	No
botch	Yes	No	Yes	No

As nouns, botch is a hypernym of howler; that is, botch is a word with a broader meaning than howler:

Other hypernyms of howler include bloomer, blooper, blunder, boner, boo-boo, bungle, flub, foul-up, fuckup, pratfall.

howler (noun)	botch (noun)
a glaring blunder	an embarrassing mistake
monkey of tropical South American forests having a loud howling cry
a joke that seems extremely funny

howler (verb)	botch (verb)
	make a mess of, destroy or ruin