sustain vs shew

sustain and shew both are verbs.

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

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

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

Other hyponyms of sustain include back, back up, vouch, verify, demonstrate, establish, prove, show, document, validate.

sustain (verb)	shew (verb)
undergo (as of injuries and illnesses)	establish the validity of something, as by an example, explanation or experiment
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