immenseness vs enormousness

immenseness and enormousness both are nouns.

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

As nouns, immenseness and enormousness are synonyms defined as:

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

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

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