What is the difference between a standard 360° Camera, and a 360°C, 360°F, and 3600°MIL camera?

So I'm passingly interested in 360° cameras as they pertain to drones and Action Cameras, but they seemed to have a fairly quick rise and fall, heaps of talk for a while and then none. But I'm still mildly curious.Then occasionally I see people talk about their camera being 360°C or 360°F, and then every now and then I see people say their camera is 3600°MIL, however when I ask them it's generally and answer of "I dunno, but it's 360°C/F/3600°MIL" and that's about the level of answer I get.I tried googling it, bit best I got was Forum threads and stuff,, I can't even find a mainstream Manufacturer referring to cameras using these other terms, at first I thought it might have been a PAL/NTSC/Military difference, as generally I've noticed that the only people using 360°F cameras are in the USA and people using 360°C cameras are everywhere but the USA in general, and generally I see 3600°MIL stuff talked about in military type groups, so I assumed it's short for MILSPEC type cameras, but there is no MILSPEC I could find for 360° cameras (admittedly I didn't look too hard at this though)But I did just see someone online adamant their car has 360°C cameras, yet they have no idea what the difference was, just that the dealer told them that's what it has. So insert shrugging confused emoji here (don't want the wrath of r/emojipolice to appear and spam my query) via /r/AskTechnology https://ift.tt/3dWiv41