empress
US
UK empress n: (female ruler of empire)
SC 女皇 nǚ huáng
SC 女王 nǚ huáng，nǚ wáng
Catherine became empress in 1725.
empress n: (emperor's wife)
SC 皇后 huáng hòu
TC 皇后
TC 皇后
SC 王后 huáng hòu，wáng hòu
The empress stood closely by her husband's side.
Empress n: (title: female ruler of empire) (头衔)
SC 女皇，女王 nǚ huáng，nǚ wáng
Catherine I, Empress of Russia, reigned for only two years.
Empress n: (title: emperor's wife) (头衔，国王的妻子)
SC 皇后，王后 huáng hòu，wáng hòu
TC 皇后
TC 皇后
Empress Elizabeth has no real power of her own; it is her husband who rules.