Primary school is a term used to describe a school that provides elementary education to children typically aged between five and twelve years old. There are several synonyms for primary school, including elementary school, grade school, and grammar school. Elementary school refers to the primary years of schooling that focus on the basics of reading, writing, and arithmetic. Grade school is another synonym that focuses on the different grades and curriculum taught in primary school. Lastly, grammar school is a synonym that emphasizes the focus on grammar and language in early education. All these synonyms refer to the initial stages of a child's education and lay the foundation for further learning.