Haworthia is a large genus of small...
Agaves are succulent plants. Succulent plants store water in their leaves. Cacti (more than one cactus) are one kind of succulents; agaves are another kind. There are quite a few such kinds of succulent plants.
Haworthia is a large genus of small succulent plants endemic to Southern Africa (Mozambique, Namibia, Lesotho, Swaziland, South Africa).