Absolute currency strength refers to the inherent value of a particular currency, independent of other currencies. It is a measure of the strength or weakness of the currency based on factors such as the strength of the issuing country's economy, political stability, and interest rates.
In contrast, the relative strength is a measure of the value of a base currency relative to others. It is a measure of how well a particular currency is performing compared to other currencies in the market. In general, absolute strength is a long-term measure, while relative strength can change rapidly in response to short-term events or market conditions.