dead set vs bent

dead set is not a noun while bent is a noun.

Word	Noun	Adjective	Verb	Adverb
dead set	No	Yes	No	No
bent	Yes	Yes	No	No

As adjectives, dead set and bent are synonyms defined as:

Other synonyms of dead set include bent on, out to.

dead set (noun)	bent (noun)
	a special way of doing something
	a relatively permanent inclination to react in a particular way
	an area of grassland unbounded by fences or hedges
	grass for pastures and lawns especially bowling and putting greens

dead set (adjective)	bent (adjective)
fixed in your purpose	of metal e.g.
	fixed in your purpose
	used of the back and knees; stooped