What's the difference between a pad and a sanitary napkin?

Both pads and sanitary napkins are feminine hygiene products that can be used during menstruation. They are built-in cotton products with strong water absorption. The difference is that the pad is generally thin, small in size and small in size. It can be used in periods with less menstruation or in days with more leucorrhea during ovulation. Compared with cotton, sanitary napkins are thicker in quality, larger in size and more in specifications. They can be used in periods with more menstruation. According to the amount of menstruation, different specifications can be flexibly selected as vitality and sanitary pads.