BJS vs bureau

BJS and bureau both are nouns.

Word	Noun	Adjective	Verb	Adverb
BJS	Yes	No	No	No
bureau	Yes	No	No	No

As nouns, bureau is a hypernym of BJS; that is, bureau is a word with a broader meaning than BJS:

BJS: the agency in the Department of Justice that is the primary source of criminal justice statistics for federal and local policy makers
bureau: an administrative unit of government

Other hypernyms of BJS include agency, authority, federal agency, government agency, office.

BJS (noun)	bureau (noun)
the agency in the Department of Justice that is the primary source of criminal justice statistics for federal and local policy makers	furniture with drawers for keeping clothes
	an administrative unit of government