difficult to apply 訓読 (kundoku)

difficult / hard, probably impossible

(linguistics) kun'yomi: a reading of a kanji that is not derived from the kanji's original pronunciation borrowed from Chinese

to use the kun'yomi of a word, to read a kanji using the pronunciation of a native Japanese word

kanji

(orthography, historical) tōyō kanji (kanji that were declared official by the Ministry of Education of Japan on November 16, 1946, later replaced by 常用漢字 (jōyō kanji))

kanji approved for regular use by the 文部科学省 (Monbu-kagaku-shō, “Japanese Ministry of Education”)

Sino-Korean vocabulary or "Hanja-eo"

Alternative spelling of 漢字返し

smaller kanji historically used as a pronunciation guide, similar to modern furigana