amenities vs sustenance

amenities and sustenance both are nouns.

Word	Noun	Adjective	Verb	Adverb
amenities	Yes	No	No	No
sustenance	Yes	No	No	No

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

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

amenities (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