like thunder vs like crazy

like thunder and like crazy both are adverbs.

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

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

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

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

like thunder (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