What's the difference between a mansion and a mansion?

Intuitively speaking, the meaning of architecture is greater than architecture. Luxury house: modern, foreign and urban. After 1990s, many commercial buildings and office buildings facing the street were often named as mansions. Architecture: it has a sense of time, is relatively simple, and feels shorter than architecture. For example, the Yellow Crane Tower in ancient poems and the Bell and Drum Tower in Xi 'an. Before the 1990 s, people seemed to like to call buildings. After the 1990s, houses became more and more popular, with tens of millions of buildings, so people used to call them buildings. Sometimes, they are also very common, like some low-rise buildings, also called so-and-so buildings. But some people call it Lou, others call it Lou.