Defogger vs. Defroster

Defoggernoun

Something or someone that defogs.

Defogger

A defogger, demister, or defroster is a system to clear condensation and thaw frost from the windshield, backglass, or side windows of a motor vehicle. The rear window defroster was invented by German automobile engineer Heinz Kunert.

Defrosternoun

A device for removing frost or ice from a surface or food by applying heat.

Defrosternoun

A device that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane).

Defrosternoun

heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane)