excessiveness vs excess

excessiveness and excess both are nouns.

Word	Noun	Adjective	Verb	Adverb
excessiveness	Yes	No	No	No
excess	Yes	Yes	No	No

As nouns, excessiveness and excess are synonyms defined as:

excessiveness and excess: immoderation as a consequence of going beyond sufficient or permitted limits

Other synonyms of excessiveness include inordinateness.

excessiveness (noun)	excess (noun)
immoderation as a consequence of going beyond sufficient or permitted limits	excessive indulgence
	immoderation as a consequence of going beyond sufficient or permitted limits
	a quantity much larger than is needed
	the state of being more than full

excessiveness (adjective)	excess (adjective)
	more than is needed, desired, or required