The coffee fruit, also known as a coffee cherry, houses the coffee seed within. This seed is what we commonly refer to as a coffee bean. However, botanically speaking, coffee is not a true bean but rather a seed.
A coffee bean is a seed from the Coffea plant and the source for coffee. It is the pip inside the red or purple fruit. This fruit is often referred to as a coffee cherry, and like the cherry, it is a fruit with a pip. Even though the coffee beans are not technically beans, they are referred to as such because of their resemblance to true beans.
Coffee and vanilla aren’t actually beans. Soy is though.
What is a coffee bean?
OK I did my own search
-wikipedia