adjective

linguistics

Kyūjitai form of 言語学 (“linguistics”)

language study / linguistics

etymology (study of the historical development of languages, particularly of individual words)

Kyūjitai form of 語源学: etymology

(historical) researchers who were employed by Tokugawa shogunate and studied Japanese and/or Japan-related history (Japanology).

化学工学: chemical engineering

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

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