fiduciary vs liquidator

fiduciary and liquidator both are nouns.

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

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

fiduciary: a person who holds assets in trust for a beneficiary
liquidator: (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, receiver, steward, legal guardian, trustee.

fiduciary (noun)	liquidator (noun)
a person who holds assets in trust for a beneficiary	(law) a person (usually appointed by a court of law) who liquidates assets or preserves them for the benefit of affected parties
	a criminal who commits homicide (who performs the unlawful premeditated killing of another human being)

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