On Spot Markets you trade a commodity like Bitcoin or Oil. The commodity is delivered to you on the spot, hence the name Spot Market.
On Derivative Markets, you trade a financial contract such as a Futures Contract, Option or Swap Contract. The contract usually has an underlying commodity (like Bitcoin or Oil) but trading the contract does not require you to hold the commodity physically.
Mushino offers both Spot and Derivative Markets.
This means that you can buy and sell Bitcoin, as you normally would on other exchanges, and go long or short on Derivative Contracts, such as Perpetual Futures, simultaneously.