independent vs grammar

independent and grammar both are nouns.

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

independent (noun)	grammar (noun)
a writer or artist who sells services to different employers without a long-term contract with any of them	the branch of linguistics that deals with syntax and morphology (and sometimes also deals with semantics)
a neutral or uncommitted person (especially in politics)

independent (adjective)	grammar (adjective)
free from external control and constraint
(of a clause) capable of standing syntactically alone as a complete sentence
(of political bodies) not controlled by outside forces
not controlled by a party or interest group