regulatory authority vs regulatory agency

regulatory authority and regulatory agency both are nouns.

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

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

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

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