snow-covered vs snowy

snow-covered and snowy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
snow-covered	No	Yes	No	No
snowy	No	Yes	No	No

As adjectives, snow-covered and snowy are synonyms defined as:

Other synonyms of snow-covered include snow-clad.

snow-covered (adjective)	snowy (adjective)
covered with snow	of the white color of snow
	covered with snow
	marked by the presence of snow