metallicity vs timbre

metallicity and timbre both are nouns.

Word	Noun	Adjective	Verb	Adverb
metallicity	Yes	No	No	No
timbre	Yes	No	No	No

As nouns, timbre is a hypernym of metallicity; that is, timbre is a word with a broader meaning than metallicity:

metallicity: The state of possessing a similar aural resonance to metal.
timbre: (music) the distinctive property of a complex sound (a voice or noise or musical sound)

Other hypernyms of metallicity include quality, timber, tone.

metallicity (noun)	timbre (noun)
The state of possessing a similar aural resonance to metal.	(music) the distinctive property of a complex sound (a voice or noise or musical sound)