Who is equivalent to undercover stickers?

The corresponding words are farmer, Steve, mom, cat, frog, gym, museum, dolphin, cinema, dance, Grand Theft Auto family and so on. According to the public information inquired, Undercover Post is a puzzle game. It used stickers to divide the participants into two groups, namely undercover group and exploration group. The exploration team should find the correct map according to the text specified by the undercover team, and the undercover team should find the mystery that can make the exploration team unable to map correctly in order to win the game.