semiconsciousness vs stupefaction

semiconsciousness and stupefaction both are nouns.

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

As nouns, semiconsciousness and stupefaction are synonyms defined as:

Other synonyms of semiconsciousness include grogginess, stupor.

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