using kanji phonetically for native words
Technical term in Japanese linguistics: a kanji is used for its reading (on'yomi or kun'yomi) to represent a native Japanese word, ignoring the kanji's meaning. Common in Man'yōgana and early Japanese writing.
Shakkun is a writing method that borrows kanji kun readings to represent words.
Shakkun is a writing method that borrows only the sound of a kanji, ignoring its meaning.
Compound of 借 (shaku, 'borrow') and 訓 (kun, 'Japanese reading of a kanji'). The term describes the practice of borrowing a kanji's reading to write a native word.