PETTY is small and of little importance.
COMMODITY is an article of commerce or product that can be used for commerce. In a narrower sense, commodity is product traded on an authorized commodity exchange. Some types of commodities: agricultural products, metals, petroleum, foreign currencies, financial instruments and indices, etc.
IRD, dependent upon usage, can mean Interest Rate Derivatives (finance), Inland Revenue Department (New Zealands tax revenue collection department), or Interest Rate Differential.
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