zony (the reverse, with zebra mare, would presumably be “pobra” like how zorse’s reverse is “hebra”) zonkey - donkey-zebra crossbreed (the reverse is “donkra”)
Zebroid means a zebra-horse hybrid, zony means zebra-pony hybrid, but MLP doesn’t have general horses. Therefore either they mean the same thing (and should be aliased) or “zebroid” is a supercategory for all zebra-equine hybrids, like zony, zonkey, and whatever people figure out for, for example, zebra hippogriffs; and should be implied by all other hybrid tags as well as actually tagged with them all.