1. prices of commodities; prices (in general); cost-of-living
Wikipedia definition
2. Price indexA price index is a normalized average of prices for a given class of goods or services in a given region, during a given interval of time. It is a statistic designed to help to compare how these prices, taken as a whole, differ between time periods or geographical locations. Price indices have several potential uses. For particularly broad indices, the index can be said to measure the economy's price level or a cost of living.
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