undergo vs go through

undergo and go through both are verbs.

Word	Noun	Adjective	Verb	Adverb
undergo	No	No	Yes	No
go through	No	No	Yes	No

As verbs, go through is a hyponym of undergo; that is, go through is a word with a more specific, narrower meaning than undergo:

Other hyponyms of undergo include respire, labor, labour, submit, take, experience, get, have, receive, experience, see.

undergo (verb)	go through (verb)
go through	eat up completely, as with great appetite
	apply thoroughly; think through
	undergo or live through a difficult experience