What is a bathroom also known as?

Okay, so, what else can you call a bathroom? It's funny, right? We have so many words for it! I mean, why? It's just a room where you... well, you know.

Anyway, here's what I've come across:

• Restroom: This is the one you hear everywhere, isn't it? Kind of a polite way to avoid saying what you're actually doing in there. Like, "Excuse me, I need to use the restroom." Makes it sound fancy.

• Washroom: I think this one emphasizes the washing bit. Makes you think of sinks and soap, maybe? We tend to use this at work, "I'll be right back, heading to the washroom."

• Powder room: Now this is an interesting one. It's usually that tiny little bathroom, often downstairs, with just a toilet and a sink. Why "powder room"? I've heard it's because ladies used to go in there to powder their noses – like, literally, with face powder. My grandma used to call it that.

• Lavatory: Ooh, fancy! Sounds very official, doesn't it? This word makes me think of old, elegant hotels or something. I never actually say this one out loud, feels a bit… stiff.

• Toilet/Loo: This one’s pretty straightforward. My British friends use "loo" all the time! It's like saying "refrigerator" versus "fridge," right? Just shorter and more casual.

• Cloakroom: Another British one. I remember being completely confused the first time I heard this. Apparently, it's sometimes a small room with a toilet, but not always. It can also just be a place to hang coats. So, yeah, a little tricky.

So there you have it – a whole bunch of ways to say "bathroom." Isn't language weird?