Dening what we mean when we use the word play in this book is a surprisingly dicult task. e word play is used in everyday parlance and seems like a simple enough concept. Yet, it has multiple meanings and connotations. In fact, play has more than 90 dierent meaning variations in the dictionary. It can be a verb, as in to play a game. It can be a noun, such as a Broadway play. en, there is the adjective playful and the adverb playfully. If we were to ask you to make a mental picture in your mind of being playful, 10 dierent people would give us 10 dierent descriptions.