When I was working in the UK patent office many years ago, I came across an application from Japan in which a piece of equipment was referred to as a "water sheep". What they actually meant was "hydraulic ram"!

In IKEA, in the UK at least, you can buy marshmallow sweets called "Skum". A Swedish friend told me that "Skum" simply means "foam" in Swedish and the word does not have the connotations it does in English.

(For those across the pond, IKEA is a Swedish store that has shops in many European countries and mainly sells furniture.)