Compare: 下 vs 下

しも

lower reaches (of a river)

した

below; down; under; younger (e.g. daughter)

しも
N3Noun

lower reaches (of a river)

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した
N5CommonNoun

below; down; under; younger (e.g. daughter)

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Examples

()は知らぬ(あいだ)地平線下(した)に沈んだ。

The sun sank below the horizon before I knew it.

投稿一覧の(した)の凡例を見て原因が分かりました。

When I looked at the explanatory notes under the posts list I realized what was causing it.