grassroots vs basic

grassroots is not a noun while basic is a noun.

Word	Noun	Adjective	Verb	Adverb
grassroots	No	Yes	No	No
basic	Yes	Yes	No	No

grassroots (noun)	basic (noun)
	(usually in the plural) a necessary commodity for which demand is constant

grassroots (adjective)	basic (adjective)
fundamental	pertaining to or constituting a base or basis
of or involving the common people as constituting a fundamental political and economic group	of or denoting or of the nature of or containing a base
	reduced to the simplest and most significant form possible without loss of generality
	serving as a base or starting point