冷泉

1. Origins, structure, and basic meaning

• Structure: 冷泉 is read as れいせん and is a noun for naturally cold spring water or the spring from which it emerges.
• Basic usage: A clear cold spring emerging appears in 澄んだ冷泉が湧く, while a facility using local spring water appears in 冷泉を利用した施設.

2. Common pitfalls and similar expressions

• A naturally cold spring
  • It is not artificially chilled water; it is groundwater that emerges cold and the natural source that supplies it.
• Difference from 温泉
  • It contrasts in temperature with a hot or warm mineral spring.