sustenance vs delicacy

sustenance and delicacy both are nouns.

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

As nouns, delicacy is a hyponym of sustenance; that is, delicacy is a word with a more specific, narrower meaning than sustenance:

sustenance (noun)	delicacy (noun)
the act of sustaining life by food or providing a means of subsistence	the quality of being beautiful and delicate in appearance
a source of materials to nourish the body	subtly skillful handling of a situation
the financial means whereby one lives	lack of physical strength
	slenderness
	lightness in movement or manner
	refined taste; tact
	something considered choice to eat