dead soul vs deceased person

dead soul and deceased person both are nouns.

Word	Noun	Adjective	Verb	Adverb
dead soul	Yes	No	No	No
deceased person	Yes	No	No	No

As nouns, dead soul and deceased person are synonyms defined as:

Other synonyms of dead soul include dead person, deceased, decedent, departed.

dead soul (noun)	deceased person (noun)
someone who is no longer alive	someone who is no longer alive