What is play on words?

Play on words, also called pun, is a type of wordplay that uses multiple meanings of words (homophones), sounds of words (homonyms), or similar-sounding words to create a humorous or clever effect. Puns can be found in various forms of literature, such as jokes, riddles, punning poetry, and advertising slogans. Play on words is often used for comic relief or making light of a situation, and it requires a certain level of wit and creativity to craft a well-executed pun. Some famous examples of puns include "Time flies like an arrow; fruit flies like a banana" and "I'm reading a book on anti-gravity. It's impossible to put down."