icy vs gelid

icy and gelid both are adjectives.

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

As adjectives, icy and gelid are synonyms defined as:

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

icy (adjective)	gelid (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