galvanize vs take aback

galvanize and take aback both are verbs.

Word	Noun	Adjective	Verb	Adverb
galvanize	No	No	Yes	No
take aback	No	No	Yes	No

As verbs, take aback is a hypernym of galvanize; that is, take aback is a word with a broader meaning than galvanize:

Other hypernyms of galvanize include ball over, blow out of the water, floor, shock.

galvanize (verb)	take aback (verb)
stimulate (muscles) by administering a shock	surprise greatly; knock someone's socks off
cover with zinc
to stimulate to action