Why this word is great
PLANGENCY — [Noun] A resonant quality of sound that is loud, deep, reverberating, and mournful. From the English adjective plangent (from Latin plangent-, stem of plangēns, present participle of plangere, meaning "to strike, beat, or lament") and the noun-forming suffix -cy. Unlike "resonance," which denotes any deep reverberation, or "sonority," which implies a rich and often pleasing fullness, plangency is resonance freighted with sorrow. It is the bronze lament of a distant funeral bell, the low, metallic groan of a great ship’s hull foundering, and the final, fading chord from a cello’s lowest string—sound as the beautiful, heavy residue of a profound and irreversible blow, an echo that remembers the strike.