ability vs leadership

ability and leadership both are nouns.

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

As nouns, leadership is a hyponym of ability; that is, leadership is a word with a more specific, narrower meaning than ability:

ability: possession of the qualities (especially mental qualities) required to do something or get something done
leadership: the ability to lead

ability (noun)	leadership (noun)
the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment	the activity of leading
possession of the qualities (especially mental qualities) required to do something or get something done	the ability to lead
	the body of people who lead a group
	the status of a leader