plangency vs ringing

plangency and ringing both are nouns.

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

As nouns, plangency and ringing are synonyms defined as:

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

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

plangency (noun)	ringing (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
	the giving of a ring as a token of engagement
	the sound of a bell ringing