to be rich or to grow rich, and to make someone rich: everything to do with having, gaining, or giving wealth.
This is Hebrew's basic word for wealth in motion. It can look at wealth from either end: the person who grows rich, or the one whose blessing or gift makes them rich. Hebrew says both with a single word, where English usually needs two, "grow rich" and "enrich."
Most often it simply describes someone becoming wealthy, whether by hard work, by God's blessing, or by dishonest gain that the prophets condemn. A smaller group of verses turns the action around: God, a king, or a trading city is the one who makes others rich. One proverb uses it for pretending, a man who plays rich while owning nothing (Proverbs 13:7), where the word is less about real wealth than about the show of it.
A near relative, צָלַח, covers success of any kind, while this word stays fixed on money and possessions. Greek later splits the two sides of this verb into separate words: πλουτέω for growing rich and πλουτίζω for making rich.