The word
‘riddle’
describes a statement or question, which directly requires a
concrete answer or presents a puzzle whose hidden meaning has to be deciphered.
There are two kinds of riddles. First there is the enigma – a metaphorically expressed riddle – and second there is a conundrum – a very tricky problem usually including a pun in its question or answer. An example for a conundrum would be: “What is the difference between a jeweler and a jailer?” – “One sells watches and the other watches cells.”