Kana

Kana are syllabic Japanese scripts, a part of the Japanese writing system contrasted with the logographic Chinese characters known in Japan as kanji (漢字). There are three kana scripts: modern cursive hiragana (ひらがな), modern angular katakana (カタカナ), and the old syllabic use of kanji known as man’yōgana (万葉仮名) that was ancestral to both. Hentaigana (変体仮名, "variant kana") are historical variants of modern standard hiragana. In modern Japanese, hiragana and katakana have directly corresponding character sets (different sets of characters representing the same sounds).

Katakana with a few additions is also used to write Ainu. Kana was used in Taiwanese as a gloss (furigana) for Chinese characters during the Japanese administration of Taiwan. See Taiwanese kana.

Each kana character (syllabogram) corresponds to one sound in the Japanese language. This is always CV (consonant onset with vowel nucleus), such as ka, ki, etc., or V (vowel), such as a, i, etc., with the sole exception of the C grapheme for nasal codas usually romanised as n. This structure had some scholars label the system moraic instead of syllabic, because it requires the combination of two syllabograms to represent a CVC syllable with coda (i.e. CVn, CVm, CVng), a CVV syllable with complex nucleus (i.e. multiple or expressively long vowels), or a CCV syllable with complex onset (i.e. including a glide, CyV, CwV).