lock [locks](something used for fastening) noun [UK: lɒk] [US: ˈlɑːk]Lock it. = Echa el candado.
padlock [padlocks](type of lock) noun [UK: ˈpæd.lɒk] [US: ˈpæd.ˌlɑːk]They broke the padlock and robbed all of the tools from the farm. = Le rompieron el candado y le robaron todos los aperos de la huerta.