extant vs living

extant is not a noun while living is a noun.

Word	Noun	Adjective	Verb	Adverb
extant	No	Yes	No	No
living	Yes	Yes	No	No

extant (noun)	living (noun)
	the experience of being alive; the course of human events and activities
	people who are still living
	the financial means whereby one lives
	the condition of living or the state of being alive

extant (adjective)	living (adjective)
still in existence; not extinct or destroyed or lost	pertaining to living persons
	(informal) absolute
	still in existence
	(used of minerals or stone) in its natural state and place; not mined or quarried
	true to life; lifelike
	still in active use