Bathrooms are one of the most important parts of a house, and they can be referred to with many different synonyms. Some of these words include restroom, lavatory, washroom, powder room, John, loo, privy, and WC. These terms are often used to describe different types of bathrooms or vary in their level of formality. A restroom is typically a public facility while a lavatory or bathroom is a more private space. A powder room or loo may be a smaller, more decorative bathroom, while a privy is a historical term for an outdoor toilet. Whatever word you choose to use, the function of the bathroom remains the same - a space for personal hygiene and relaxation.