what

let's see; what have we got here

Nothing

which (of three or more) / which one /

(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

The iteration mark 々, which indicates that the previous kanji ought to be repeated.