What's the difference between slippers and sandals

The main differences are different in nature, characteristics and application, as follows:
1、 Different properties
1. Slippers
Slippers are shoes without uppers in the back half. They are often made of soft leather, plastic, cloth, etc.
2. Sandals
Sandals are open shoes, which fix the soles on the feet through straps, clip posts or arches and ankles.
2、 Different characteristics
1. Slippers
The heel is completely empty, only the front has toe cap, and most of them are flat soles.
2. Sandals
The feet are exposed, and the types include flat bottom, slope heel, high heel, fish mouth, bandage, herringbone, toe covering, etc.
3、 Different applications
1. Slippers
They are usually worn indoors.
2. Sandals
Sandals are usually worn in summer, but they can also be worn in spring and autumn. Now there are sandals specially worn in winter.