OHLC

• Open: The opening price of a share of stock when the market opens.
• Close: The last price of a stock when the market closes is called the closing price.
• High of Day: The highest price at which a share of stock has been traded during the day is known as the day's high.
• Low of Day: The lowest price at which a share of a stock has been traded during the day is known as the day's low.
• 52-Week High: The highest price at which a stock's share has been traded in 52 weeks (one year).
• 52-Week Low: The lowest price at which a stock's share has been traded in 52 weeks (one year).

The same logic applies to cryptocurrencies: replace stock with cryptocurrency and share of a stock with coins/tokens.