round-backed vs round-shouldered

round-backed and round-shouldered both are adjectives.

Word	Noun	Adjective	Verb	Adverb
round-backed	No	Yes	No	No
round-shouldered	No	Yes	No	No

As adjectives, round-backed and round-shouldered are synonyms defined as:

round-backed and round-shouldered: having the back and shoulders rounded; not erect

Other synonyms of round-backed include crooked, hunched, stooped, stooping.

round-backed (adjective)	round-shouldered (adjective)
having the back and shoulders rounded; not erect	having the back and shoulders rounded; not erect