pointed ones
Pointed.
Yes, some people wear a witches hat.
Down!
witch/witches hat
they wear tall pointy hats.
Yes, when they wear life preservers.
Nope. You're thinking of Tarzan.
So, they would know which witch is which.
The traditional pointed hat worn by witches is likely an artistic creation, and there is no specific reason why they don't wear flat hats. Different cultures and time periods have depicted witches in various ways, and the pointed hat has been a popular symbol associated with witchcraft in Western folklore.
In RuneScape, the witches do not wear capes. If you were to put on clothes to look like a witch, you may put on a cape. You don't have to, but it is your choice.
Some witches may choose to wear earrings, but it is not a requirement or part of being a witch. Whether or not a witch wears earrings is a personal choice and not indicative of their practice or beliefs in witchcraft.