連語: compound word, collocation

後家: widow / 碁笥: container for go-stones

五時: five o'clock / 誤字: typo

団吾: a male given name

団子: sweet dumplings / 談合: consultation; agreement / 段碁: a ranked level of play in the game of go; a ranked player in the game of go

和語: native Japanese words

事後: post-, after the fact / 爾後: thereafter / 耳語: private talk, whispering / 持碁: game of go ending in a draw

語: language / 棊, 棋, 碁: go (board game) / 期: a specific time; death (as in "one's time has come") / 伍: a military squad (usu. of five people); a group / 午: noon; midnight

語: language of, -ese / 後: after

The hiragana syllable ご (go). Its equivalent in katakana is ゴ (go).