Difference between APO Local order (08) and Planned order (05)

Dear Expert

What is differnce In R/3Object type 08 (Local orders ) and type 05(planned order ) In APO

0     Stock

1     Purchase Requisition

2     Purchase Order

3     Sales Order

4     Planning

5     Planned Order

6     Production Order

7     Reservation

8     APO Local Order

9     Advanced Shipping Notification

A     Order Confirmation

B     Delivery

I     Inspection Lot

M     Maintenance Order

P     Project Order

R     Proposed Order

T     Shipment

V     VMI Stock Transfer Order

     Not yet determined

Thanks & regards

Virender