shew vs affirm

shew and affirm both are verbs.

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

As verbs, affirm is a hypernym of shew; that is, affirm is a word with a broader meaning than shew:

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

Other hypernyms of shew include confirm, corroborate, substantiate, support, sustain.

shew (verb)	affirm (verb)
establish the validity of something, as by an example, explanation or experiment	establish or strengthen as with new evidence or facts
	to declare or affirm solemnly and formally as true
	say yes to