decease vs give-up the ghost

decease is a noun but give-up the ghost is not a noun.

Word	Noun	Adjective	Verb	Adverb
decease	Yes	No	Yes	No
give-up the ghost	No	No	Yes	No

As verbs, decease and give-up the ghost are synonyms defined as:

decease and give-up the ghost: pass from physical life and lose all bodily attributes and functions necessary to sustain life

decease (noun)	give-up the ghost (noun)
the event of dying or departure from life

decease (verb)	give-up the ghost (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	pass from physical life and lose all bodily attributes and functions necessary to sustain life