living vs subsistence

living and subsistence both are nouns.

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

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

Other hyponyms of living include amenities, comforts, conveniences, creature comforts, maintenance, meal ticket.

living (noun)	subsistence (noun)
the experience of being alive; the course of human events and activities	minimal (or marginal) resources for subsisting
people who are still living	the state of existing in reality; having substance
the financial means whereby one lives	a means of surviving
the condition of living or the state of being alive

living (adjective)	subsistence (adjective)
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