timber vs sonority

timber and sonority both are nouns.

Word	Noun	Adjective	Verb	Adverb
timber	Yes	No	No	No
sonority	Yes	No	No	No

As nouns, sonority is a hyponym of timber; that is, sonority is a word with a more specific, narrower meaning than timber:

timber: (music) the distinctive property of a complex sound (a voice or noise or musical sound)
sonority: having the character of a loud deep sound; the quality of being resonant

timber (noun)	sonority (noun)
a beam made of wood	having the character of a loud deep sound; the quality of being resonant
a post made of wood
(music) the distinctive property of a complex sound (a voice or noise or musical sound)
land that is covered with trees and shrubs
the wood of trees cut and prepared for use as building material