A single boba is also known as a tapioca pearl because it is dark and shiny. It's made from tapioca flour dough that is rolled into individual balls, boiled and soaked in syrup. They bring sweetness and texture when placed in tea and coffee.
Boba is another name for Bubble tea which is any of the various types of tea or milk tea that they offer with any flavor you choose to add. The employees are very helpful in directing you to something you'll like if you talk to them.
Boba are the little tapioca balls that are often in bubble tea (there are other things you can get other than the tapioca balls) but these days most people say boba in terms of drinks with these bubbles in them (typically milk tea or fruit tea)
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