idol vs gold standard

idol and gold standard both are nouns.

Word	Noun	Adjective	Verb	Adverb
idol	Yes	No	No	No
gold standard	Yes	No	No	No

As nouns, gold standard is a hyponym of idol; that is, gold standard is a word with a more specific, narrower meaning than idol:

idol (noun)	gold standard (noun)
a material effigy that is worshipped	a paragon of excellence
an ideal instance; a perfect embodiment of a concept	a monetary standard under which the basic unit of currency is defined by a stated quantity of gold
someone who is adored blindly and excessively