difficult / hard, probably impossible

(linguistics) the reading of a Japanese word written in kanji that is roughly based on the pronunciation of the kanji characters in the originating Chinese dialect at the time the word was introduced into Japanese

to use the on'yomi of a word, to read a word using the pronunciation based on the original Chinese pronunciation

to recall, to remember / to learn / to memorize / to feel (an emotion or sense)

kanji

to remember, to recognize, to look familiar

(education) The 1,026 kanji taught in primary school; a subset of 常用漢字 (じょうようかんじ, jōyō kanji)

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

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"