contractor vs muscle

contractor and muscle both are nouns.

Word	Noun	Adjective	Verb	Adverb
contractor	Yes	No	No	No
muscle	Yes	No	Yes	No

As nouns, muscle is a hyponym of contractor; that is, muscle is a word with a more specific, narrower meaning than contractor:

Other hyponyms of contractor include musculus.

contractor (noun)	muscle (noun)
a bodily organ that contracts	possessing muscular strength
someone (a person or firm) who contracts to build things	authority or power or force (especially when used in a coercive way)
(law) a party to a contract	one of the contractile organs of the body
the bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps	animal tissue consisting predominantly of contractile cells
	a bully employed as a thug or bodyguard

contractor (verb)	muscle (verb)
	make one's way by force