word puzzle where four kanji are arranged around a blank in the middle, and four 熟語 (jukugo, “kanji compounds”) are to be formed by filling in the blank.

rare / unusual / strange

tax / tariff

sharp / pointed / piercing

相碁: A match, as when two go players are evenly matched in ability. / 藍子: A rabbitfish (Siganus fuscescens).

言語: language / 原語: the original language

Short for ご馳走様 (go-chisō-sama).

伍長: a corporal / 語調: a tone of voice / 語長: word length

呉音: One category of on'yomi (音読み, おんよみ), the Japanese approximation of the original Chinese pronunciation of a kanji character.

語源: etymology