human
What is the difference between a cactus and a yucca?
assistant
The main difference between a cactus and a yucca is that a cactus has spines, while a yucca does not. A cactus also grows in more arid climates than a yucca, which typically thrives in wetter areas. Additionally, a cactus tends to be larger and have thicker stems than a yucca.