preserve vs sustain

sustain vs preserve

preserve is a noun but sustain is not a noun.

preserve and sustain both are verbs.

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

As verbs, sustain is a hyponym of preserve; that is, sustain is a word with a more specific, narrower meaning than preserve:

preserve: keep or maintain in unaltered condition; cause to remain or last
sustain: lengthen or extend in duration or space

Other hyponyms of preserve include re-start, restart, resume, hang in, hang on, hold on, persevere, persist, perpetuate, keep up, prolong, mummify.

preserve (noun)	sustain (noun)
fruit preserved by cooking with sugar
a reservation where animals are protected
a domain that seems to be specially reserved for someone

preserve (verb)	sustain (verb)
prevent (food) from rotting	undergo (as of injuries and illnesses)
keep in safety and protect from harm, decay, loss, or destruction	establish or strengthen as with new evidence or facts
to keep up and reserve for personal or special use	admit as valid
keep or maintain in unaltered condition; cause to remain or last	supply with necessities and support
maintain in safety from injury, harm, or danger	provide with nourishment
keep undisturbed for personal or private use for hunting, shooting, or fishing	be the physical support of; carry the weight of
	lengthen or extend in duration or space

Difference between preserve and sustain

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