surely vs sure enough

surely and sure enough both are adverbs.

Word	Noun	Adjective	Verb	Adverb
surely	No	No	No	Yes
sure enough	No	No	No	Yes

As adverbs, surely and sure enough are synonyms defined as:

surely and sure enough: definitely or positively (`sure' is sometimes used informally for `surely')

Other synonyms of surely include certainly, for certain, for sure, sure, sure as shooting.

surely (adverb)	sure enough (adverb)
definitely or positively (`sure' is sometimes used informally for `surely')	as supposed or expected
	definitely or positively (`sure' is sometimes used informally for `surely')