
A sign reading “Restroom” is even more culturally specific.
But two simple letters can communicate the intended meaning across language barriers.
That makes WC particularly useful in places where travelers from many countries pass through.
Airports.
Train stations.
Hotels.
Tourist attractions.
International transportation hubs.
The abbreviation does not require much translation.
A traveler who has never spoken English may still recognize “WC” as a sign indicating a toilet.
This is one reason the abbreviation has survived long after the original English expression became uncommon.
WC Versus Bathroom
Another interesting question is why we don’t simply call every such room a bathroom.
The answer is partly linguistic and partly cultural.
In North American English, bathroom is one of the most common everyday terms for the room containing a toilet.
But the word technically refers to bathing.