prospective vs future

prospective is not a noun while future is a noun.

Word	Noun	Adjective	Verb	Adverb
prospective	No	Yes	No	No
future	Yes	Yes	No	No

prospective (noun)	future (noun)
	bulk commodities bought or sold at an agreed price for delivery at a specified future date
	a verb tense that expresses actions or states in the future
	the time yet to come

prospective (adjective)	future (adjective)
of or concerned with or related to the future	yet to be or coming
	a verb tense or other formation referring to events or states that have not yet happened
	(of elected officers) elected but not yet serving
	effective in or looking toward the future