When you go to bake a chocolate cake, it's pretty easy to find what you're looking for, right? Sure, there are some that are flourless and fudgy, and others that are tender and fluffy, but they're all labeled "chocolate."
The opposite end of the spectrum isn't so simple. There's a whole lot of terminology to describe what seems to be the same thing. But are white, yellow, and vanilla cake actually the same across the board? Not quite.