hamstring vs sinew

hamstring and sinew both are nouns.

Word	Noun	Adjective	Verb	Adverb
hamstring	Yes	No	Yes	No
sinew	Yes	No	No	No

As nouns, sinew is a hypernym of hamstring; that is, sinew is a word with a broader meaning than hamstring:

hamstring: one of the tendons at the back of the knee
sinew: a cord or band of inelastic tissue connecting a muscle with its bony attachment

Other hypernyms of hamstring include tendon.

hamstring (noun)	sinew (noun)
one of the tendons at the back of the knee	possessing muscular strength
	a cord or band of inelastic tissue connecting a muscle with its bony attachment

hamstring (verb)	sinew (verb)
cripple by cutting the hamstring
make ineffective or powerless