grammar vs limiting

grammar and limiting both are nouns.

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

grammar (noun)	limiting (noun)
the branch of linguistics that deals with syntax and morphology (and sometimes also deals with semantics)	the grammatical relation that exists when a word qualifies the meaning of the phrase

grammar (adjective)	limiting (adjective)
	strictly limiting the reference of a modified word or phrase
	restricting the scope or freedom of action