future vs grammar

future and grammar both are nouns.

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

future (noun)	grammar (noun)
bulk commodities bought or sold at an agreed price for delivery at a specified future date	the branch of linguistics that deals with syntax and morphology (and sometimes also deals with semantics)
a verb tense that expresses actions or states in the future
the time yet to come

future (adjective)	grammar (adjective)
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