<human>:  I need help understanding the difference between different types of coffee beans
<bot>: Understanding the difference between the various types of coffee beans starts with understanding what is special about each type. Arabica beans tend to have a sweet, mellow flavor but can also have a slight fruity aroma or chocolate notes. Robusta beans, on the other hand, have a bitter and more intense flavor, and usually have a higher caffeine content. There are also other bean varieties, such as Liberica, Excelsa, and Hybrid beans, which combine properties of Arabica and Robusta beans and create unique flavor profiles. Each bean variety has its own unique flavor, with subtle notes that can change depending on the region and roasting techniques used.