It is the trading within users. For example, after transferring fiat money to a seller, the buyer receives the crypto from the seller.

A super currency is a hypothetical global currency.

It is the lawful currency issued by the central bank of a country, such as Chinese Yuan, US Dollar, and Japanese Yen.

Currency crisis includes a broad currency crisis and a narrow currency crisis.

It refers to the type of trading by purchasing one crypto at the price of another crypto, such as purchasing Bitcoin using USDT（as in BTC/USDT）.

In modern transactions, the common medium of exchange is currency.

A kind of news reported in the form of figures and statements or graphs. Compared to the traditional news report, digital news can catch the gist faster with a concise form.

An unissued cryptocurrency proposed by Facebook on 2019 June and planned to be launched in 2020.

It is a style of trading that attempts to gain profits by going long or short in multiple trading sessions in a shorter period （several times at a day or in a week）.

It is an off-chain scaling solution that enables instant and low-fee payments.

Investors start to buy some currency with the expectation of a price rise in the future. Once its price rises, they sell it at a high price to be able to take profits.

it refers to an altcoin that has no intrinsic value since it does not have any use cases or a proper project behind it.

Cryptography is a branch of Mathematics and Computer science.

It refers to the readable information transmitted from a sender to a receiver.

It means a crypt token that is considered worth investing in.

It refers to a type of trading by maximizing profits on price differences between exchanges.

It refers to a type of stablecoin which is backed by a fiat currency.

It is a technology that enables transactions and transfer of tokens issued on different blockchains.

In accounting and finance industries, it is an analysis of a business_s financial state - including health, competitors, and markets.

It is an investment strategy used in a fixed period of time.