Me “Hi, is that, umm… Phones, number four, uhhhh?”
Phones4u “Haha, yes, but It’s pronounced ‘Phones For You’”
Me “Oh, it’s it a wrong number? I’ve got it written down here, it’s a number four, not a word ‘for’ f-o-r, and it’s not the word ‘you’, but just a letter U on its own, which is pronounced ‘uh’”
Phones4u “yes, that’s how we write it”
Me “Why? Why didn’t you do it properly? It’s just like that argument with the 90s boyband Fiveive all over again.”
Etc etc
It’s a bit weird, isn’t it?
Technically, the navigational tool is “a compass” and the geometric draw-a-circle tool is “a pair of compasses” (I don’t know why) - but in general use, people just call both of them “a compass”.
We’ve had hundreds of years to rename one of them, but for some reason haven’t bothered.