ice melter vs de-icer

ice melter and de-icer both are nouns.

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

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

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

Other synonyms of ice melter include ice melt.

ice melter (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.