(games) hide and seek

root (of a word)

fixed expression; idiom

A group blind date, at which there are roughly the same number of men and women who are seeking a chance to find a friend of the opposite sex.

a gong

food and drink for the Emperor; food and drink for a noble / (honorific) food and drink; a meal

(linguistics) sense, meaning of words; semantics

pigsty (enclosure where pigs are kept) / pigsty (dirty or very untidy place)

miscalculation

to make a miscalculation; to miscalculate