"The weird kinds are called 'ambient'," Rook says helpfully. "And 'a some other thing of some kind' is a good way to put it. The different kinds of ambient magic aren't necessarily anything like each other, especially if they're very different. Sometimes we talk about 'craft magics' like metal and thread as different from 'natural magics' like weather and plants, but even those categories aren't perfectly clear; metal can be found in nature, for example, and plants are often cultivated in ways some people might consider a craft."