Until today I thought that addresses were synchronised between Accounts and the Contacts that belonged to those accounts. But I've just added address details to an Acccount and noticed that they're not copied through to existing Contacts that belong to that account.

I've also noticed that the description of the addresses are different between Accounts (Billing & Shipping) and Contacts (Mailing & Other).

Do I have to do something special to link Contact and Account addresses?