As I wait for my kilt, I have been looking at hats. I've seen Balmorals, Caubeens, and Tam O' Shanters.

However since most of the pictures I've seen are either a stack of caps laying flat on a table or a picture 3"x3". My question is what is the difference?

I tried wikipedia but most of the descriptions go along the lines of The caubeen is a headdress, similar to the Balmoral, Tam o' Shanter and beret worn in Scotland and Ireland. Which is as helpful as water is wet, fire is hot.