brawny vs sinewy

brawny and sinewy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
brawny	No	Yes	No	No
sinewy	No	Yes	No	No

As adjectives, brawny and sinewy are synonyms defined as:

brawny and sinewy: (of a person) possessing physical strength and weight; rugged and powerful

Other synonyms of brawny include hefty, muscular, powerful.

brawny (adjective)	sinewy (adjective)
(of a person) possessing physical strength and weight; rugged and powerful	consisting of tendons or resembling a tendon
	(of a person) possessing physical strength and weight; rugged and powerful
	(of meat) full of sinews; especially impossible to chew