OK, This will give it away. BIG hint.
What is the difference Oil @ Gas, Prime Steak & Select Steaks, Cows & Heifers, Gold & Silver, Titlest & Top Flight, Marines & Army, Macy & Wal Mart, Ford & Porch, Dell and HP, Crown Royal & Beer
Round two.
I have cofidence the forum can come up with the answer
Good Luck