dead set vs bent on

dead set and bent on both are adjectives.

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

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

Other synonyms of dead set include bent, out to.

dead set (adjective)	bent on (adjective)
fixed in your purpose	fixed in your purpose