bent vs dead set

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

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

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

Other synonyms of bent include bent on, out to.

bent (noun)	dead set (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

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