Freicoin is a cryptocurrency built around the economic idea of money with a storage fee. It is based on the concept of "free money" by economist Silvio Gesell.

FPGA is a field-programmable gate array, a semiconductor chip that can be configured for specific tasks after it has been manufactured. In mining, it occupies an intermediate position between graphics cards and ASICs.

A cryptocurrency fork is a new coin created on the basis of existing code or an algorithm with certain changes made to it. This is how altcoins based on Bitcoin and Litecoin came about.

A fork in a blockchain is a change to the rules by which a block is recognized as valid. There are soft forks and hard forks, which affect the unity of the network in different ways.

Flat, or a sideways trend, is a market state in which the price moves within a narrow horizontal range without a pronounced trend. It is a period of calm between upward and downward movements.