弛緩: relaxation / 遅緩: slowness, tardity / 痴漢: pervert, molester, masher; fool, idiot / 置換: substitution

三才: the "three talents": sky, earth and people / 三歳: three years old / 山菜: mountain vegetables; foraged vegetables / 山塞: mountain stronghold; Chinese counterfeit goods

関西弁: the Kansai dialect

漢文: Chinese literature, or Japanese literature written in Chinese

完文: a male given name

文学: literature

(programming) computer language

原子時計: atomic clock (not to be confused with radio clock)

散弾銃, 霰弾銃: shotgun

獣医学: veterinary medicine