bread and butter vs resource

bread and butter and resource both are nouns.

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

As nouns, resource is a hypernym of bread and butter; that is, resource is a word with a broader meaning than bread and butter:

bread and butter: the financial means whereby one lives
resource: available source of wealth; a new or reserve supply that can be drawn upon when needed

bread and butter (noun)	resource (noun)
the financial means whereby one lives	a source of aid or support that may be drawn upon when needed
	the ability to deal resourcefully with unusual problems
	available source of wealth; a new or reserve supply that can be drawn upon when needed