湖水|こすいkosui[0]heiban (flat)

1. nounlake; lake water
   この手紙てがみを書かき終おえたら、あの山やまの２マイルほど先さきの湖水こすいにご案内あんないしましょう。↗

   When I have finished writing the letter, I will take you to the lake about two miles beyond the hill.

• Synonym湖みずうみNeutralThe neutral, everyday word for a lake and the most general of the three. 「湖水」 is more written, focusing on the water in the lake or a poetic lake surface.
• SynonymレークNeutralA loanword for lake, found mostly in place and facility names such as 「レークサイド」; in general prose 「湖」 is the usual choice.

In everyday language a lake is 「湖」. Choose 「湖水」 for written or literary prose, when you mean the water of the lake or a poetic lake surface, as in 「澄んだ湖水」. 「レーク」 appears in place and facility names.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 湖みずうみ。