directional, verb, noun, punctuation, time word, adverb · referring to a later time, sequence, or the period following an event

午饭后我们要开会。

directional, noun, punctuation, verb, numeral · referring to the back, behind, or rear position in space

他躲在门后面。

directional · an empress or the wife of an emperor

她是这个王朝的最后一位皇后。

noun · a monarch or sovereign ruler in ancient times

在远古时期，人们曾称呼君主为后。

proper name · surname Hou

后先生是我们的邻居。