3. The ‘kind of’ rule
Have you ever wondered why artists paint ‘still lifes’ and not ‘still lives?’ What about if you were inviting Julia Child’s family over for a barbeque? You would say you were inviting the Childs over, not the Children. Similarly, the hockey team from Toronto is called the ‘Maple Leafs’ rather than the ‘Maple Leaves.’ This is all true because of a grammar rule called the ‘kind of’ rule, which was discovered by renowned linguist Steven Pinker. The rule essentially states that since Julia Child is not a ‘kind of child,’ her last does not follow the irregular pluralization rule that normally changes ‘child’ to ‘children.’ Similarly, a still life is not a kind of life, but rather a kind of painting, and the Maple Leafs are not really a kind of leaf, but a hockey team.