talkativeness vs garrulity

talkativeness and garrulity both are nouns.

Word	Noun	Adjective	Verb	Adverb
talkativeness	Yes	No	No	No
garrulity	Yes	No	No	No

As nouns, talkativeness and garrulity are synonyms defined as:

Other synonyms of talkativeness include garrulousness, loquaciousness, loquacity.

talkativeness (noun)	garrulity (noun)
the quality of being wordy and talkative	the quality of being wordy and talkative