Linked from
The 10 pages that link to Freezing rain, each with the reason it gives.
SnowCompared with: It falls as liquid drops rather than as ice crystals.
RainCompared with: It falls as liquid rain but creates ice upon contact.
Ice stormBroader topic: It is the precipitation that coats surfaces during an ice storm.
GraupelCompared with: It reaches the ground as liquid, whereas graupel falls as soft ice pellets.
Rain and snow mixedCompared with: It reaches the ground as liquid only, then forms a coating of ice.