Its not because its weaker and leaks but the square keep castle is strong
A stone or square keep castle is the extention of a motte and bailey castle.
CONCENTRIC
square stone keep castle
It is called a motte and baily castle that is it i think hope this helped
it depend's what motte and bailey castle you are talking about
the motte is the hill and the bailey is the castle.
Because it has a better defense and it is much stronger
Check out the Related Link named "interactive Motte & Bailey Castle diagram" for your answer to "How were Motte and Bailey castles built?".
A Bailey in a Motte and Bailey castle would be used to put the stables, guard room, blacksmith etc...
motte and bailey castles were built out of wood
The motte and bailey castle
A Motte is the part of a Motte and Bailey castle is the part on the hill consists of the keep.