argent vs silvery

argent is a noun but silvery is not a noun.

Word	Noun	Adjective	Verb	Adverb
argent	Yes	Yes	No	No
silvery	No	Yes	No	No

As adjectives, argent and silvery are synonyms defined as:

argent and silvery: of lustrous grey; covered with or tinged with the color of silver

Other synonyms of argent include silver, silverish.

argent (noun)	silvery (noun)
a metal tincture used in heraldry to give a silvery appearance

argent (adjective)	silvery (adjective)
of lustrous grey; covered with or tinged with the color of silver	of lustrous grey; covered with or tinged with the color of silver
	having the white lustrous sheen of silver
	resembling or reminiscent of silver