stun vs stupefy

stun and stupefy both are verbs.

Word	Noun	Adjective	Verb	Adverb
stun	No	No	Yes	No
stupefy	No	No	Yes	No

As verbs, stun and stupefy are synonyms defined as:

stun (verb)	stupefy (verb)
make senseless or dizzy by or as if by a blow	make senseless or dizzy by or as if by a blow
hit something or somebody as if with a sandbag	be a mystery or bewildering to
overcome as with astonishment or disbelief	make dull or stupid or muddle with drunkenness or infatuation