Fun fact: cocaine is still used as a topical anaesthetic! In fact, in the US, it's approved under not one but two brand names! Names that gained recent approval at that.
Feel free to use this info however you like. I just think it's interesting that cocaine is still used for this purpose when there have since been better topical anaesthetics.
Drugs
Incidentally, yes, those anaesthetics ending in -caine do tend to be related to cocaine in some way. Another fun fact for you.