There are several synonyms for the term "early childhood," which refers to the first years of a child's life. Some synonyms include "infancy," which refers to the first year of life, and "toddlerhood," which encompasses the period from one to three years old. Another synonym is "preschool years," which commonly refers to the period from three to five years old when children attend preschool. "Early years" is also a synonym for "early childhood" and emphasizes the importance of these formative years in a child's development. "Early education" is another synonym and highlights the educational opportunities that can support children's growth and development during this critical period.