Toilets, or water closets, come in various types and designs around the world, each with its own unique features and functions. Here are some common types of toilets found in different regions:

1. One-piece Toilet: In a one-piece toilet, the toilet bowl and cistern are combined into a single unit, creating a seamless and easy-to-clean design. It typically has a sleek and modern appearance.

2. Two-piece Toilet: This is a traditional type of toilet where the toilet bowl and cistern are separate units that are bolted together. It is relatively easier to install and repair compared to one-piece toilets.

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3. Wall-hung Toilet: This type of toilet is mounted on the wall, with the toilet bowl suspended above the floor. The cistern or tank is concealed within the wall, giving it a sleek and minimalist appearance.

4. Back-to-Wall Toilet: Similar to the wall-hung toilet, the back-to-wall toilet is also mounted on the wall, but it has a visible cistern or tank. However, the toilet bowl is still connected to the wall, providing a clean and uncluttered look.

5. Close-coupled Toilet: This is the most common type of toilet found in households. It consists of a toilet bowl and a cistern that are connected together, with the cistern sitting directly on top of the toilet bowl.

6. Flush Toilet: This is the most common type of toilet found in many parts of the world. It has a bowl connected to a sewer or septic system, and it uses water to flush waste into the drain or sewage system.

7. Squat Toilet: This type of toilet is commonly found in many Asian, Middle Eastern, and African countries. It consists of a ceramic or concrete floor-mounted toilet pan with footrests, and users squat over it to use it.

8. Dual-flush Toilet: This type of toilet is designed to save water by offering two flushing options – one for liquid waste and another for solid waste. Users can choose the appropriate flush based on their needs, which helps to conserve water.

9. Urinal: These are fixtures commonly found in public restrooms or commercial settings, designed for men to urinate standing up. They come in various designs, including wall-mounted, floor-mounted, or waterless options.

10. Smart Toilet: These are technologically advanced toilets that come with features such as automatic flushing, motion sensors, self-cleaning functions, and remote control operation. They are becoming increasingly popular in modern homes and luxury hotels.

11. Pressure-assisted Toilet: These toilets use pressurized air or water to create a more forceful flush, resulting in better performance in terms of waste removal and reduced clogging. They are often used in commercial settings with high traffic.

12. Vacuum-assisted Toilet: This type of toilet uses a vacuum to create a powerful flush, which helps in clearing waste effectively. It is known for its quiet operation and efficient water usage.

13. Bidet Toilet: These toilets come with built-in bidet features, which provide a gentle spray of water for cleaning after toilet use. They often include options for adjustable water pressure, temperature, and spray patterns.

14. Portable Toilet: These are temporary toilets that are commonly used at construction sites, outdoor events, or during emergencies. They are usually self-contained units that store waste in a holding tank, which can be emptied later.

15. Composting Toilet: This type of toilet uses biological processes to break down waste into compost, which can be used as fertilizer. It is often used in eco-friendly or off-grid settings, where sewage systems may not be available.

16. Child-size Toilet: These toilets are designed specifically for children, with a lower seat height and smaller bowl size to make it more comfortable and safe for young users.

These are just a few examples of the various types of toilets found around the world. Toilet designs and features can vary greatly depending on cultural preferences, technological advancements, and environmental considerations in different regions.