bbl vs British capacity unit

bbl and British capacity unit both are nouns.

Word	Noun	Adjective	Verb	Adverb
bbl	Yes	No	No	No
British capacity unit	Yes	No	No	No

As nouns, British capacity unit is a hypernym of bbl; that is, British capacity unit is a word with a broader meaning than bbl:

bbl: any of various units of capacity
British capacity unit: a unit of measure for capacity officially adopted in the British Imperial System; British units are both dry and wet

Other hypernyms of bbl include United States liquid unit, Imperial capacity unit.

bbl (noun)	British capacity unit (noun)
any of various units of capacity	a unit of measure for capacity officially adopted in the British Imperial System; British units are both dry and wet