NAWCWPNS vs bureau

NAWCWPNS and bureau both are nouns.

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

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

NAWCWPNS: the principal agency of the United States Navy for research and development for air warfare and missile weapon systems
bureau: an administrative unit of government

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

NAWCWPNS (noun)	bureau (noun)
the principal agency of the United States Navy for research and development for air warfare and missile weapon systems	furniture with drawers for keeping clothes
	an administrative unit of government