fiduciary vs receiver

fiduciary and receiver both are nouns.

Word	Noun	Adjective	Verb	Adverb
fiduciary	Yes	Yes	No	No
receiver	Yes	No	No	No

As nouns, receiver is a hyponym of fiduciary; that is, receiver is a word with a more specific, narrower meaning than fiduciary:

fiduciary: a person who holds assets in trust for a beneficiary
receiver: (law) a person (usually appointed by a court of law) who liquidates assets or preserves them for the benefit of affected parties

Other hyponyms of fiduciary include conservator, administrator, executor, liquidator, steward, legal guardian, trustee.

fiduciary (noun)	receiver (noun)
a person who holds assets in trust for a beneficiary	set that receives radio or tv signals
	earphone that converts electrical signals into sounds
	a person who receives something
	(law) a person (usually appointed by a court of law) who liquidates assets or preserves them for the benefit of affected parties
	a football player who catches (or is supposed to catch) a forward pass
	the tennis player who receives the serve

fiduciary (adjective)	receiver (adjective)
relating to or of the nature of a legal trust (i.e. the holding of something in trust for another)