What are the main differences between cafe robusta and arabica coffee beans in terms of flavor, aroma, and caffeine content?

Cafe robusta beans are known for their strong, bitter flavor and higher caffeine content compared to arabica beans, which have a smoother, more complex flavor profile and lower caffeine content. Arabica beans are often preferred for their aromatic qualities and nuanced flavors, while robusta beans are commonly used in blends to add depth and intensity.