expansiveness vs effusiveness

expansiveness and effusiveness both are nouns.

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

As nouns, expansiveness and effusiveness are synonyms defined as:

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

Other synonyms of expansiveness include expansivity.

expansiveness (noun)	effusiveness (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