Bitcoin (the symbol is ₿) is a cryptocurrency and worldwide payment system. It is the first in the crypto market decentralized digital currency, as there are currently no banks which work with this crypto. Transactions for Bitcoin take place between users  directly which is called peer-to-peer network. For now the creatoe of this crypto remains unknown. 

A bond is a form of a fixed income investment where an investor loans money to government or corporations that in their turn borrow the funds for a certain period of time at a variable or fixed interest rate. Bonds are used by both big and medium-sized companies, municipalities, and even sovereign governments to help raise money and finance different projects. Owners of bonds are called debtholders or creditors.

The Bank of Japan is the Japanese central bank Headquarter in the business district of Nihonbashi in Tokyo. the Bank of Japan is the Japanese central bank. The bank is responsible for issuing and handling currency and treasury securities, implementing monetary policy, maintaining the stability of the Japanese financial system, and providing settling and clearing services.

The Bank of England (BoE) is the central bank for the United Kingdom. It has a wide range of responsibilities, similar to those of most central banks around the world. It acts as the government's bank and the lender of last resort. It issues currency and, most importantly, it oversees monetary policy.

A bull market is a financial market of a group of securities (assets), in which prices are rising or are expected to rise. The term "bull market" is most often used to refer to the stock market, but can be applied to anything that is traded, such as bonds, currencies and commodities. The sentiment in a “bull market” is usually positive.

A market condition in which the prices of securities are falling, and widespread pessimism causes the negative sentiment to be self-sustaining. As investors anticipate losses in a bear market and selling continues, pessimism only grows.

A firm or an individual which acts as an intermediary between a buyer and a seller usually charging some kind of commission for his service. A license is required for security and other reasons.