Difference Forex Gold vs Commodity Gold?

[Johan Strandberg]

Hi, 

I'm downloading some pricedata from Tickstory Lite and am wondering about the difference in instrument that both refers to Gold. (Google didn't solve it for me)

XAUUSD Gold (Forex)

and 

AUCMDUSD (Gold Commodity)

Of course I will check with Tickstory but first wanted to check with the greatest forum first! MQL-forum!

[Sergey Golubev]

I am not sure but I think that this symbol AUCMDUSD is not gold commodity.

Besides, the brokers can name one pair/symbol in different way.

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Just about Commodity from here:

A commodity is a basic good used in commerce that is interchangeable with other commodities of the same type; commodities are most often used as inputs in the production of other goods or services. The quality of a given commodity may differ slightly, but it is essentially uniform across producers. When they are traded on an exchange, commodities must also meet specified minimum standards, also known as a basis grade.

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And this article with video about Gold (physical gold, gold ETFs, gold futures)