sickeningness vs disgustingness

sickeningness and disgustingness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sickeningness	Yes	No	No	No
disgustingness	Yes	No	No	No

As nouns, sickeningness and disgustingness are synonyms defined as:

Other synonyms of sickeningness include distastefulness, nauseatingness, unsavoriness.

sickeningness (noun)	disgustingness (noun)
extreme unpalatability to the mouth	extreme unpalatability to the mouth
	the property of being extremely unacceptable to the mind