effusiveness vs expansiveness

effusiveness and expansiveness both are nouns.

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

As nouns, effusiveness and expansiveness are synonyms defined as:

effusiveness and expansiveness: a friendly open trait of a talkative person

Other synonyms of effusiveness include expansivity.

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