plangency vs reverberance

plangency and reverberance both are nouns.

Word	Noun	Adjective	Verb	Adverb
plangency	Yes	No	No	No
reverberance	Yes	No	No	No

As nouns, plangency and reverberance are synonyms defined as:

plangency and reverberance: having the character of a loud deep sound; the quality of being resonant

Other synonyms of plangency include resonance, ringing, sonority, sonorousness, vibrancy.

plangency (noun)	reverberance (noun)
having the character of a loud deep sound; the quality of being resonant	having the character of a loud deep sound; the quality of being resonant