ice melt vs de-icer

ice melt and de-icer both are nouns.

Word	Noun	Adjective	Verb	Adverb
ice melt	Yes	No	No	No
de-icer	Yes	No	No	No

As nouns, ice melt and de-icer are synonyms defined as:

ice melt and de-icer: a substance used to melt ice; it can take a form of liquid or solid crystals.

Other synonyms of ice melt include ice melter.

ice melt (noun)	de-icer (noun)
a substance used to melt ice; it can take a form of liquid or solid crystals.	a substance used to melt ice; it can take a form of liquid or solid crystals.