honest-to-god vs sure-enough

honest-to-god and sure-enough both are adjectives.

Word	Noun	Adjective	Verb	Adverb
honest-to-god	No	Yes	No	No
sure-enough	No	Yes	No	No

As adjectives, honest-to-god and sure-enough are synonyms defined as:

honest-to-god and sure-enough: (used informally especially for emphasis) real or genuine

Other synonyms of honest-to-god include honest-to-goodness.

honest-to-god (adjective)	sure-enough (adjective)
(used informally especially for emphasis) real or genuine	(used informally especially for emphasis) real or genuine