A laptop is basically a portable computer, while a tablet is a touch screen computing device. Laptops are bigger, thicker, and heavier than tablets. Tablets have onscreen keyboards while Laptops have a physical keyboard. Laptops usually have trackpads that serve as a mouse while they can also have an external mouse, but tablets have a touch screen for all their functions.
The battery life of laptops is usually weak, owing to the fact that they need to power some greater device from within the computer system while the battery life of tablets is usually longer. Laptops have large batteries, and they are also removable, while tablets have an inbuilt non-removable battery
Some tablets have a slot for inserting a SIM card, while laptops do not have any slot for SIM card. Tablets do not have CD or DVD Rom while some laptops have a CD or DVD ROM. Laptops have more features and are also more expensive than tablets.