low-pitched vs bass

low-pitched is not a noun while bass is a noun.

Word	Noun	Adjective	Verb	Adverb
low-pitched	No	Yes	No	No
bass	Yes	Yes	No	No

low-pitched (noun)	bass (noun)
	the member with the lowest range of a family of musical instruments
	the lowest part of the musical range
	the lowest adult male singing voice
	the lowest part in polyphonic music
	an adult male singer with the lowest voice
	nontechnical name for any of numerous edible marine and freshwater spiny-finned fishes
	any of various North American freshwater fish with lean flesh (especially of the genus Micropterus)
	the lean flesh of a saltwater fish of the family Serranidae

low-pitched (adjective)	bass (adjective)
used of sounds and voices; low in pitch or frequency	having or denoting a low vocal or instrumental range
set at a low angle or slant