This is the 8984th most frequent Japanese word.
河上
"河上" means "upstream" or "upper reaches of a river" in English.
In this sentence, '河上' (kawakami) is used to refer to the 'upstream' or 'upper reaches' of a river, which is a spatial reference.
河上の景色はとても美しいです。
The scenery upstream of the river is very beautiful.
Here, '河上' indicates a location along the river where the bridge is located, upstream of the usual reference point.
新しい橋が河上に架けられました。
A new bridge was constructed upstream of the river.
In this sentence, '河上' is used as a proper noun, a surname of someone, showcasing its usage as a name.