directive vs leading

directive and leading both are nouns.

Word	Noun	Adjective	Verb	Adverb
directive	Yes	Yes	No	No
leading	Yes	Yes	No	No

directive (noun)	leading (noun)
a pronouncement encouraging or banning some activity	thin strip of metal used to separate lines of type in printing
	the activity of leading

directive (adjective)	leading (adjective)
showing the way by conducting or leading; imposing direction on	going or proceeding or going in advance; showing the way
	greatest in importance or degree or significance or achievement
	having the leading position or higher score in a contest
	indicating the most important performer or role