enormousness vs immenseness

enormousness and immenseness both are nouns.

Word	Noun	Adjective	Verb	Adverb
enormousness	Yes	No	No	No
immenseness	Yes	No	No	No

As nouns, enormousness and immenseness are synonyms defined as:

enormousness and immenseness: unusual largeness in size or extent or number

Other synonyms of enormousness include grandness, greatness, immensity, sizeableness, vastness, wideness.

enormousness (noun)	immenseness (noun)
unusual largeness in size or extent or number	unusual largeness in size or extent or number