refuse vs contract out

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

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

As verbs, contract out is a hyponym of refuse; that is, contract out is a word with a more specific, narrower meaning than refuse:

Other hyponyms of refuse include disdain, freeze off, pooh-pooh, reject, scorn, spurn, turn down, regret, repudiate, disobey.

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

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