Resource name?

I'm in the early stages of developing a fantasy/medieval Supremacy/Civ like game that utilizes resources as part of its economic system. The resources allow players to "do" various things and some can be traded with other players if desired. My goal is NOT to have too much accounting and to use some type of counter to represent the resource. I'm think that 3 - 4 is the "right" number of resources but I'm coming up short on a good names (any help would be great).

Here is what I have so far:
Crowns = gold (this is the money of the realm)
Mana = magic energy (this is used to cast spells)
Trade Goods = Building resources and mercantile items (used to for buildings, ships, seige engines and trade route profits)
Food Stuff = Food for troops (must be used to creat supply lines & baggage trains).

So my question is should I keep both Trade Goods and Food Stuff or just vombine into one resource? If combined shoulod I try to come up with a better neame or just keep Trade Goods?

Thanks.