Cacti and Succulents come in so many different shapes, colors, and sizes. Cacti is a category within the succulent family. The difference being that cacti have areoles which are small round cushion like mounds of flesh where spines, hair, leaves, flowers, and more grow from the plant. Plants within the succulent group (Cacti too) can store water. They need watered infrequently and generally require a lot of sun. Cacti and succulents make excellent, low maintenance houseplants.