expansiveness vs expansive

expansiveness is a noun but expansive is not a noun.

Word	Noun	Adjective	Verb	Adverb
expansiveness	Yes	No	No	No
expansive	No	Yes	No	No

expansiveness (noun)	expansive (noun)
a friendly open trait of a talkative person
a quality characterized by magnificence of scale or the tendency to expand

expansiveness (adjective)	expansive (adjective)
	able or tending to expand or characterized by expansion
	friendly and open and willing to talk
	marked by exaggerated feelings of euphoria and delusions of grandeur
	of behavior that is impressive and ambitious in scale or scope