Hi Rajesh,
Though the names of the address objects are same, they are two different objects configured in two different Zones. The scope for each of the objet is limited to the respective zone in which they were configured and not Global. The only objects that are global are those that are explicitly configured in the Global Zone and the MIP and VIP objects, if the respective is configured on the interfaces.
Hope this answers your question.
Regards,
Pranita