chunky vs low-set

chunky and low-set both are adjectives.

Word	Noun	Adjective	Verb	Adverb
chunky	No	Yes	No	No
low-set	No	Yes	No	No

As adjectives, chunky and low-set are synonyms defined as:

chunky and low-set: short and thick; as e.g. having short legs and heavy musculature

Other synonyms of chunky include dumpy, squat, squatty, stumpy.

chunky (adjective)	low-set (adjective)
short and thick; as e.g. having short legs and heavy musculature	lower than average
like or containing small sticky lumps	short and thick; as e.g. having short legs and heavy musculature