I suggest an archer, walls, and knights protect/guard the castle. The archers fire and attack the enemy's, the walls make it hard for the enemy's to get in, and the knights try to hold off the enemy's while the archers also attack the same enemy.
it is called a portcullis
I suppose you would call them a tailor.
We call those people "Hypocritical".
medieval money
Ale.
Your Rib Cage protects your lungs.
A chateau
Conisbrough castle is a circular Norman keep tower or you can call it a stone round keep the castle is in Doncaster south Yorkshire
jester
That would be an ARCA
A pub
Serfs.