There are two kinds of numbers; ordinal and cardinal. Ordinal numbers denote rank or position in a system, while cardinal numbers tally how many units of something there are. You can think of ordinals ...

The four cardinal directions are North (N), East (E), South (S), West (W). This can be remembered using the mnemonic Naughty Elephants Squirt Water. The directions are at \(90°\) angles on the compass ...