What are the differences between flat sheet and fitted sheet?

A fabric laid on the bed, usually made from pure cotton or blended yarns, and produced using plain weave, twill weave, or variable patterns.
It is made with jacquard weaving, featuring a beautiful pattern, a smooth fabric surface, a comfortable feel, and durability. It is both practical and decorative.
The bedding is very good, and the bed sheets come in a wide variety of styles and designs, all of which are very modern and attractive.
Compared to bed sheets, bed linens are more widely and commonly used in households, and when it comes to washing, they are also very convenient.
Quick and easy - whether for hand washing or machine washing, it can be handled with ease.

In addition to protecting the mattress, its four corners are tied with elastic bands like mattress protector. When placed on the mattress, it won't slip off. It can also be used as a bedsheet.
It is very convenient. In most countries, the mattress covers are designed to protect the mattress. In fact, the mattress covers can also be used as bed sheets.
When used, the bed sheet is more securely fixed to prevent it from slipping. Young people tend to prefer the bed coverlet. It brings convenience and eliminates the daily hassle of constantly folding and arranging the bed sheet. When sleeping at night, there is no longer any need to worry about it.
I'm tired of the problem of the bed sheet slipping off. It's very convenient. The production process of the bed cover is also more complicated than that of the bed sheet.