What is the difference between size dimension and location dimension?

Well, honey, size dimension is all about how big or small something is, while location dimension is all about where the heck it's at. It's like comparing Apples to Oranges - they're both fruits, but one's all about size and the other's all about where you can find it. So, in a nutshell, size dimension is about how much space something takes up, and location dimension is about where the heck to find it.