Oh, you. I read "Alice in Wonderland" ; a word means what the government says it means. :>)
I love that statement "a word means what the government says it means" I had this discussion in my child's school. My 8 year old called a tomato a fruit and was corrected by the teacher. I spend time with my child and love to find out what nature does etc and we went to a garden and I explained why a tomato was a fruit, not a vegetable. The teacher (a substitute thank god) talked down to my child and the class began to laugh etc etc. Long story short, the next day I went to the class (with a member of the school to talk with the class) and explained exactly why many think it to be a vegetable. First off the difference between them is that a fruit is part of the reproductive system of the plant, generally from a flower that will grow into a new plant if it drops and goes into the ground, a veggie is a part of the plant such as the stock, root, tuber (potato) or leaf of the plant. Vegetables are taxed higher than fruits and the Supreme Court stated that it was a vegetable in 1893 (Nix v. Hidden).
TLDR... Because the Supreme Court wants to tax something, they can change the name and meaning of something just to suit their own needs and the needs of the government.