Japanese edit

For pronunciation and definitions of じょうげん – see the following entries.
上限
[noun] upper limit
[noun] (mathematics) maximum
上弦
[noun] waxing crescent moon, a moon in its first quarter
承元
[proper noun] the Jōgen era, 1207-1211
(This term, じょうげん, is the hiragana spelling of the above terms.)

(The following entry is uncreated: 貞元.)