gelid vs icy

gelid and icy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
gelid	No	Yes	No	No
icy	No	Yes	No	No

As adjectives, gelid and icy are synonyms defined as:

Other synonyms of gelid include arctic, frigid, glacial, polar.

gelid (adjective)	icy (adjective)
extremely cold	extremely cold
	devoid of warmth and cordiality; expressive of unfriendliness or disdain
	covered with or containing or consisting of ice
	shiny and slick as with a thin coating of ice