Ice

Ice is the solid form of water. On hot summer days you certainly enjoy iced drinks and ice-cream.

In winter time many people like to skate on frozen lakes. Everybody knows it is dangerous to skate on thin ice. So it is easy to see why the idiom “to skate on thin ice” means “to be in a risky situation”. You’ll be skating on thin ice if you take an examination without preparation.

“Break the ice” is another idiom. On a social occasion there must be somebody to break the ice at the beginning and start a conversation.