awful vs awfulness

awful is not a noun while awfulness is a noun.

Word	Noun	Adjective	Verb	Adverb
awful	No	Yes	No	Yes
awfulness	Yes	No	No	No

awful (noun)	awfulness (noun)
	a quality of extreme unpleasantness

awful (adjective)	awfulness (adjective)
offensive or even (of persons) malicious
causing fear or dread or terror
exceptionally bad or displeasing
extreme in degree or extent or amount or impact
inspiring awe or admiration or wonder
inspired by a feeling of fearful wonderment or reverence

awful (adverb)	awfulness (adverb)
used as intensifiers