"old kana": Synonym of 歴史的仮名遣い (rekishiteki kanazukai, “historical kana usage”)

(history) a syllabary with characters drawn from kanji, such as the 万葉仮名 (Man'yōgana), that is the precursor to hiragana and katakana

(collective) 平仮名 (hiragana) and 片仮名 (katakana)

an orthographic technique utilizing Chinese characters in a way that maps the Chinese pronunciation, or such an approximation, to Japanese sounds to write Japanese words

an orthographic technique utilizing Chinese characters in a way that maps character semantics to Japanese words to write Japanese words

Man'yōgana, the early Japanese syllabary using Chinese characters to represent Japanese sounds: the predecessor of hiragana and katakana

(orthography) the four kana pairs of じ/ジ, ず/ズ, ぢ/ヂ and づ/ヅ, the latter two of which represent historical morae that are now pronounced identically to the former two in most major dialects

hentaigana: any of the hiragana made obsolete in Meiji-era reforms that enforced having one hiragana for each syllable

Arabic (alphabet)

(orthography, typography) a capital letter; a majuscule