contract out vs refuse

contract out is not a noun while refuse is a noun.

Word	Noun	Adjective	Verb	Adverb
contract out	No	No	Yes	No
refuse	Yes	No	Yes	No

As verbs, refuse is a hypernym of contract out; that is, refuse is a word with a broader meaning than contract out:

Other hypernyms of contract out include decline.

contract out (noun)	refuse (noun)
	food that is discarded (as from a kitchen)

contract out (verb)	refuse (verb)
refuse to pay a levy to a union for political use	show unwillingness towards
assign a job to someone outside one's own business	not accept as true
	refuse to let have
	refuse entrance or membership
	elude, especially in a baffling way
	resist immunologically the introduction of some foreign tissue or organ