demonstrate vs sustain

sustain vs demonstrate

demonstrate and sustain both are verbs.

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

As verbs, sustain is a hypernym of demonstrate; that is, sustain is a word with a broader meaning than demonstrate:

demonstrate: establish the validity of something, as by an example, explanation or experiment
sustain: establish or strengthen as with new evidence or facts

Other hypernyms of demonstrate include affirm, confirm, corroborate, substantiate, support.

demonstrate (verb)	sustain (verb)
establish the validity of something, as by an example, explanation or experiment	undergo (as of injuries and illnesses)
provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes	establish or strengthen as with new evidence or facts
give an exhibition of to an interested audience	admit as valid
march in protest; take part in a demonstration	supply with necessities and support
	provide with nourishment
	be the physical support of; carry the weight of
	lengthen or extend in duration or space

Difference between demonstrate and sustain

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