wide-eyed vs round-eyed

wide-eyed and round-eyed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
wide-eyed	No	Yes	No	No
round-eyed	No	Yes	No	No

As adjectives, wide-eyed and round-eyed are synonyms defined as:

Other synonyms of wide-eyed include childlike, dewy-eyed, simple.

wide-eyed (adjective)	round-eyed (adjective)
exhibiting childlike simplicity and credulity	having large round wide-open eyes
(used of eyes) fully open or extended	exhibiting childlike simplicity and credulity