Pun, a commonly-used rhetorical devicc, a play on words, differs from riddle.

双关不同于谜语，前者是一种修辞方式，一种文字游戏；

youdao

Pun : a figure of speech; a play on words, sometimes on different senses of the same word and sometimes on the similar sense or sound of different words.

双关：一种文字游戏，有时利用同一个词的不同意思，而有时利用不同词的相近意思或发音。

youdao

But have you ever heard of the word "pun", a play on words?

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