nourish vs sustain

nourish and sustain both are verbs.

Word	Noun	Adjective	Verb	Adverb
nourish	No	No	Yes	No
sustain	No	No	Yes	No

As verbs, nourish and sustain are synonyms defined as:

Other synonyms of nourish include nurture.

nourish (verb)	sustain (verb)
provide with nourishment	undergo (as of injuries and illnesses)
give nourishment to	establish or strengthen as with new evidence or facts
	admit as valid
	supply with necessities and support
	provide with nourishment
	be the physical support of; carry the weight of
	lengthen or extend in duration or space