bread and butter vs living

bread and butter and living both are nouns.

Word	Noun	Adjective	Verb	Adverb
bread and butter	Yes	No	No	No
living	Yes	Yes	No	No

As nouns, bread and butter and living are synonyms defined as:

Other synonyms of bread and butter include keep, livelihood, support, sustenance.

bread and butter (noun)	living (noun)
the financial means whereby one lives	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

bread and butter (adjective)	living (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