age, era, period (of time) / the times, spirit of the age / antiquity / a time in one's life, one's days (in college etc.)

(historical or contemporary) any of several kingdoms, empires, or states of the Chinese people

the central part of a country, historically, commonly known as the capital city or the main region, where an emperor or other ruler resides / something within a country

Short for 中国地方 (Chūgoku chihō): the Chūgoku region of Japan

a surname

for a while, for a period of time

a while, a period of time

importance

large leaf gentian (Gentiana macrophylla, especially its root, which is used in traditional Chinese medicine)

large leaf gentian (Gentiana macrophylla, especially its root, which is used in traditional Chinese medicine)