Ah, no worries! I’m not sure if it’s even universally agreed upon across native English speakers. Where I’m from though, a powerboard (or power strip in other parts of the world) has one plug that then leads on to usually 4 or more additional power points/sockets. An extension cord on the other hand usually only allows a single device be connected to it (whether that’s another extension cord or something else)
I really wish my autocorrect would stop doing that. I can count on one hand the amount of times I’ve actually wanted to write “PowerPoint”. I couldn’t even count on 10 hands the amount of times it’s assumed I’m some kind of idiot that doesn’t know “PowerPoint” is a single word when I type “power point”