leading vs leadership

leading and leadership both are nouns.

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

As nouns, leading and leadership are synonyms defined as:

leading (noun)	leadership (noun)
thin strip of metal used to separate lines of type in printing	the activity of leading
the activity of leading	the ability to lead
	the body of people who lead a group
	the status of a leader

leading (adjective)	leadership (adjective)
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