潤う

1. Origins, structure, and basic meaning

• Structure: 潤う, read うるおう, describes becoming moist or becoming better off economically.
• Basic usage: It applies both to fields receiving rain and to shops benefiting from an increase in tourists.

2. Common pitfalls and similar expressions

• Moisture and economic benefit
  • Fields or skin point to moisture, while shops or household finances point to economic well-being. These are physical and figurative uses of the same verb.
• Difference from 潤す
  • 畑が潤う describes a change in the fields; 雨が畑を潤す describes rain making the fields moist. 潤す is read うるおす.