<human>:  Why is a baby’s nappy called a nappy?
<bot>: That’s a good question. It’s because nappies were invented in New Zealand. Nappies are a type of absorbent cloth that are designed to catch and hold moisture and urine. They are usually made of cotton and have a plastic backing. They are often referred to as “diapers” in North America, although the term “diaper” is also used to refer to the cloth itself.