Typically, I just call things as they are, as an example lets use the reef. We got the bridge, which I aptly named bridge (genius I know) and I called the area underneath the bridge, where the splat zone usually is, Underpass cause well, its an underpass. Then there's rightside, leftside, both pretty self explanatory and the "perch" which is that super tall wall where Jet Squelchers and Splatlings like to hang. (myself included) Just call em whatever you want, as long as your team understands you'll be fine