like crazy vs like hell

like crazy and like hell both are adverbs.

Word	Noun	Adjective	Verb	Adverb
like crazy	No	No	No	Yes
like hell	No	No	No	Yes

As adverbs, like crazy and like hell are synonyms defined as:

like crazy and like hell: (informal) with great speed or effort or intensity; used for emphasis

Other synonyms of like crazy include like mad, like sin, like the devil, like thunder.

like crazy (adverb)	like hell (adverb)
(informal) with great speed or effort or intensity; used for emphasis	(informal) with great speed or effort or intensity; used for emphasis
	used ironically to indicate the opposite of what is stated