bass vs low-pitched

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

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

bass (noun)	low-pitched (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

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