contract in vs consent

contract in is not a noun while consent is a noun.

Word	Noun	Adjective	Verb	Adverb
contract in	No	No	Yes	No
consent	Yes	No	Yes	No

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

contract in: consent in writing to pay money to a trade union for political use
consent: give an affirmative reply to; respond favorably to

Other hypernyms of contract in include accept, go for.

contract in (noun)	consent (noun)
	permission for something to happen

contract in (verb)	consent (verb)
consent in writing to pay money to a trade union for political use	give an affirmative reply to; respond favorably to