loquaciousness vs loquacity

loquaciousness and loquacity both are nouns.

Word	Noun	Adjective	Verb	Adverb
loquaciousness	Yes	No	No	No
loquacity	Yes	No	No	No

As nouns, loquaciousness and loquacity are synonyms defined as:

Other synonyms of loquaciousness include garrulity, garrulousness, talkativeness.

loquaciousness (noun)	loquacity (noun)
the quality of being wordy and talkative	the quality of being wordy and talkative