immenseness vs sizeableness

immenseness and sizeableness both are nouns.

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

As nouns, immenseness and sizeableness are synonyms defined as:

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

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

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