ice up vs ice over

ice up and ice over both are verbs.

Word	Noun	Adjective	Verb	Adverb
ice up	No	No	Yes	No
ice over	No	No	Yes	No

As verbs, ice up and ice over are synonyms defined as:

ice up and ice over: become covered with a layer of ice; of a surface such as a window

Other synonyms of ice up include frost over.

ice up (verb)	ice over (verb)
become covered with a layer of ice; of a surface such as a window	become covered with a layer of ice; of a surface such as a window