Sweat glands differ from sebaceous glands?

Yes. The sebaceous glands are microscopic exocrine glands in the skin that secrete an oily or waxy matter, called sebum, to lubricate and waterproof the skin and hair. Sweat glands are small tubular structures of the skin that produce sweat. They are usually used for cooling purposes. There are two main types of sweat glands: Eccrine and apocrine.