Foreign Service vs accredit

Foreign Service is a noun but accredit is not a noun.

Word	Noun	Adjective	Verb	Adverb
Foreign Service	Yes	No	No	No
accredit	No	No	Yes	No

Foreign Service (noun)	accredit (noun)
the part of the State Department that supplies diplomats for the United States embassies and consulates around the world

Foreign Service (verb)	accredit (verb)
	ascribe an achievement to
	grant credentials to
	provide or send (envoys or ambassadors) with official credentials