sweep away vs wipe out

sweep away and wipe out both are verbs.

Word	Noun	Adjective	Verb	Adverb
sweep away	No	No	Yes	No
wipe out	No	No	Yes	No

As verbs, sweep away and wipe out are synonyms defined as:

sweep away (verb)	wipe out (verb)
eliminate completely and without a trace	kill in large numbers
overwhelm emotionally	mark for deletion, rub off, or erase
	remove from memory or existence
	wipe out the effect of something
	use up (resources or materials)
	eliminate completely and without a trace