NTIS vs bureau

NTIS and bureau both are nouns.

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

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

NTIS: an agency in the Technology Administration that is a primary resource for government-funded scientific and technical and engineering and business related information
bureau: an administrative unit of government

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

NTIS (noun)	bureau (noun)
an agency in the Technology Administration that is a primary resource for government-funded scientific and technical and engineering and business related information	furniture with drawers for keeping clothes
	an administrative unit of government