forthcoming vs future

forthcoming is not a noun while future is a noun.

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

forthcoming (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

forthcoming (adjective)	future (adjective)
available when required or as promised	yet to be or coming
of the relatively near future	a verb tense or other formation referring to events or states that have not yet happened
at ease in talking to others	(of elected officers) elected but not yet serving
	effective in or looking toward the future