concrete sink and tub
Concrete is a building material. It is not often used for the main living space. Generally, it's used for exterior spaces such as driveways or garage floors.
The real estate agent I worked with when buying a house told me of an old saying about concrete, "There're two kinds of concrete. The kind that's cracked, and the kind that's going to crack."
Concrete can also show superficial/cosmetic surface damage through a process known as "spalling", which occurs when water absorbes beneath the surface and freezes. As the freezing water expands, it pushes on the top surface of the concrete, causing it to "pop" off, creating surface flaking.
Stamped concrete can be designed to look like different materials or have various appearances.
Related
References
- Wikipedia's article on concrete