An API is a software interface that allows developers to use the ready-made functions of one service inside another application. In the crypto industry, APIs are used to connect data from exchanges, wallets, and analytics.

Chop is short-term price swings within a narrow price range that, as a rule, do not lead to a sustained move up or down. The price seems to "dangle" between nearby levels.

Ether (Ether, ETH) is the native cryptocurrency of the Ethereum blockchain platform, the second most important in the industry. In traders' jargon there are playful distortions of the name — "kefir," "efir," "zemfir" — but they always refer to one asset.

A whale (Whale) is a large holder of cryptocurrency whose volumes can noticeably influence the market. The trades of such participants often move the quotes of individual coins, so other traders watch their wallets closely.

A client (Client) is a program that enables a user to interact with a blockchain network: transfers, balance checks, and data synchronization. The most familiar example of a client is a cryptocurrency wallet.