Need HELP in Baking ASAP!!!

[kingrattus]

I want to make this

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Fudge Upside Down Cake

3/4 cup sugar
2 tbsp butter
1/2 cup milk
1 cup flour(all pourpose)
2 tsp baking powder
1/4 tsp salt
2 tbsp cocoa
1/2 cup chopped walnuts
1/2 cup brown sugar
1/2 cup granulated sugar
1/3 cup cocoa
1 1/2 cups boiling water

Cream together 3/4 cup sugar and butter.
Stir in milk.
Sift flour,baking powder,salt and 2 tbsp cocoa together.
Add to creamed mixture and beatutil smooth.
tir in walnuts.
Spread batter into a square 9 inch pan.
In a small bowl combine brown sugar,1/2 cup granulated sugar and 1/3 cup of cocoa.
Sprinkle over the batter.
Pout the boiling water over the top.
Bake at 350 for 35-40 minutes.
The cake will rise to the top and boiling water will combine with the sugar/cocoa mixture to make a rich syrup underneath.

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But I'm horribly confused. What is Sugar and Grandulated Sugar??

Is it the white sugar u can put in coffee or tea.
or
Is it the icening Sugar or make Icening to put onto of a cake??

Pleae only respond if u REALLY know the answer..

Thanks in advance


EDIT: its baked & tasted great while it lasted
the answer was
sugar = white sugar
grandulated sugar = white sugar

Thanks to those who helped