stay away vs stand back

stay away and stand back both are verbs.

Word	Noun	Adjective	Verb	Adverb
stay away	No	No	Yes	No
stand back	No	No	Yes	No

As verbs, stay away and stand back are synonyms defined as:

Other synonyms of stay away include keep one's distance, keep one's eyes off, keep one's hands off.

stay away (verb)	stand back (verb)
stay clear of, avoid	stand away from an object or person
	stay clear of, avoid