galvanise vs take aback

galvanise and take aback both are verbs.

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

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

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

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