grammar vs strong

grammar is a noun but strong is not a noun.

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

grammar (noun)	strong (noun)
the branch of linguistics that deals with syntax and morphology (and sometimes also deals with semantics)

grammar (adjective)	strong (adjective)
	having strength or power greater than average or expected
	having a strong physiological or chemical effect
	being distilled rather than fermented; having a high alcoholic content
	strong and sure
	freshly made or left
	not faint or feeble
	immune to attack; incapable of being tampered with
	of verbs not having standard (or regular) inflection
	having or wielding force or authority
	of good quality and condition; solidly built