creature comforts vs sustenance

creature comforts and sustenance both are nouns.

Word	Noun	Adjective	Verb	Adverb
creature comforts	Yes	No	No	No
sustenance	Yes	No	No	No

As nouns, sustenance is a hypernym of creature comforts; that is, sustenance is a word with a broader meaning than creature comforts:

Other hypernyms of creature comforts include bread and butter, keep, livelihood, living, support.

creature comforts (noun)	sustenance (noun)
things that make you comfortable and at ease	the act of sustaining life by food or providing a means of subsistence
	a source of materials to nourish the body
	the financial means whereby one lives