noun
Japanese character (kana, kanji)
Refers to characters used in Japanese writing, including both kana and kanji. Often used in contrast to Western letters or other scripts.
彼は日本字をきれいに書く。
He writes Japanese characters neatly.
この本は日本字で書かれている。
This book is written in Japanese characters.
仮名 refers to the syllabic scripts (hiragana and katakana), while 日本字 includes both kana and kanji.
Compound of 日本 (Japan) and 字 (character, letter). The term is straightforward and transparent.