like the devil vs like crazy

like the devil and like crazy both are adverbs.

Word	Noun	Adjective	Verb	Adverb
like the devil	No	No	No	Yes
like crazy	No	No	No	Yes

As adverbs, like the devil and like crazy are synonyms defined as:

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

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

like the devil (adverb)	like crazy (adverb)
(informal) with great speed or effort or intensity; used for emphasis	(informal) with great speed or effort or intensity; used for emphasis