something that is acquired during one's life

test; exam

(historical) the son of a duke in China or Vietnam; compare 王子 (son of a king) and 皇子 (son of an emperor)

plaster / gypsum

New Tokyo International Airport (TYO), currently named Narita International Airport)

Kyūjitai form of 交渉 (“negotiations”)

(historical) development of Asia: the strengthening of an alliance of countries in Asia. Usually used in the period before World War II.

(military, historical) arsenal

(usually in Chinese contexts) an emperor, ruler, or other monarch with a heavenly mandate

sailing, voyage