A market order is an instruction to buy or sell an asset immediately at the best available price. It is executed at once as long as there are matching limit orders in the order book.

A transaction fee is the payment the sender of a transfer pays the network for processing and confirming the operation. Its amount depends on the network load and the priority of the transfer.

A one-pager is a condensed presentation of a crypto project that fits on a single page. It briefly and clearly describes the essence of the idea and often serves as investors' first introduction to the project.

An exchanger is a service for exchanging one form of money for another. In the crypto space exchangers are most often used to exchange cryptocurrency for fiat money and back.

A beginner (noob, newbie) is a person who has just started to learn about cryptocurrencies or has recently appeared in a themed community. The term describes a level of experience, not a judgment of the person.