bass clarinet vs clarinet

bass clarinet and clarinet both are nouns.

Word	Noun	Adjective	Verb	Adverb
bass clarinet	Yes	No	No	No
clarinet	Yes	No	No	No

As nouns, clarinet is a hypernym of bass clarinet; that is, clarinet is a word with a broader meaning than bass clarinet:

bass clarinet: a large clarinet whose range is an octave below the B-flat clarinet
clarinet: a single-reed instrument with a straight tube

bass clarinet (noun)	clarinet (noun)
a large clarinet whose range is an octave below the B-flat clarinet	a single-reed instrument with a straight tube