Bureau of Diplomatic Security vs DS

Bureau of Diplomatic Security and DS both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bureau of Diplomatic Security	Yes	No	No	No
DS	Yes	No	No	No

As nouns, Bureau of Diplomatic Security and DS are synonyms defined as:

Bureau of Diplomatic Security and DS: the bureau in the State Department that is responsible for the security of diplomats and embassies overseas

Bureau of Diplomatic Security (noun)	DS (noun)
the bureau in the State Department that is responsible for the security of diplomats and embassies overseas	an honorary degree in science
	the bureau in the State Department that is responsible for the security of diplomats and embassies overseas