What is the difference between traditional Ch - Cchatty

1、They look different.
2、Traditional chinese characters are used mostly in Hongkong and Taiwan. Simpplified Chinese are used mostly in Mainland China so the numbe of people who use it will be much more.
3、Except the characters are different, the basic rule of sentence is basically the same.

简体字用的人多，繁体字用的人少。