immensity vs enormity

immensity and enormity both are nouns.

Word	Noun	Adjective	Verb	Adverb
immensity	Yes	No	No	No
enormity	Yes	No	No	No

As nouns, enormity is a hyponym of immensity; that is, enormity is a word with a more specific, narrower meaning than immensity:

immensity (noun)	enormity (noun)
unusual largeness in size or extent or number	an act of extreme wickedness
	the quality of extreme wickedness
	the quality of being outrageous
	vastness of size or extent