regulatory agency vs regulatory authority

regulatory agency and regulatory authority both are nouns.

Word	Noun	Adjective	Verb	Adverb
regulatory agency	Yes	No	No	No
regulatory authority	Yes	No	No	No

As nouns, regulatory agency and regulatory authority are synonyms defined as:

regulatory agency and regulatory authority: a governmental agency that regulates businesses in the public interest

regulatory agency (noun)	regulatory authority (noun)
a governmental agency that regulates businesses in the public interest	a governmental agency that regulates businesses in the public interest