directing vs leading

directing is not a noun while leading is a noun.

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

directing (noun)	leading (noun)
	thin strip of metal used to separate lines of type in printing
	the activity of leading

directing (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