A financial instrument representing an operation of buying/selling of one currency for another.

Those currency pairs that do not include the US dollar in foreign exchange market trade are referred to as cross currency pairs or crosses.

Hardware wallets are a form of cryptocurrency cold storage. Resembling the appearance of a USB thumb drive, hardware wallets store your private keys offline from potential breaches. Not all cryptocurrencies are supported by hardware wallets.

The exponential moving average is more complicated, but is calculated by taking the difference between the current price and the previous EMA.