In economics, a good whose demand rises as consumer income rises is called a normal good.
For a normal good, income and quantity demanded move in the same direction, assuming other relevant factors remain unchanged. When people earn more, they generally buy more of the good, or switch to higher-quality versions of it.
Food, clothing, restaurant meals, and many household products can be normal goods, although the classification depends on the consumer and the income range being studied. A good is not automatically normal in every market.
The main contrast is an inferior good, whose demand falls as income increases. Normal goods can also be necessities or luxuries: the distinction depends on income responsiveness, not on whether the item is essential. These categories describe demand behavior rather than moral or qualitative judgments about products.