conveniences vs sustenance

conveniences and sustenance both are nouns.

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

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

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

conveniences (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