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upper reaches (of a river); upper stream
top; upper part; upper half (of the body)
beginning; first
head (of a table)
long ago
person of high rank (e.g. the emperor)
government; imperial court
imperial capital (i.e. Kyoto); capital region (i.e. Kansai); region (or direction of) the imperial palace
wife; mistress (of a restaurant)
「上」 has other readings with different meanings.
川の上の方に橋がある。
There's a bridge upstream.
上座に座るのは目上の方だ。
The person who sits in the seat of honor is one's superior.
この地域は昔から上と呼ばれて政治の中心だった。
This area has been called 'kami' since old times and was the political center.