stupefy vs stupefaction

stupefy is not a noun while stupefaction is a noun.

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

stupefy (noun)	stupefaction (noun)
	the action of stupefying; making dull or lethargic
	marginal consciousness
	a feeling of stupefied astonishment

stupefy (verb)	stupefaction (verb)
make senseless or dizzy by or as if by a blow
be a mystery or bewildering to
make dull or stupid or muddle with drunkenness or infatuation