The word "孺子" is formed by combining the character "孺", meaning child or infant, with the character "子", meaning child. The character "孺" incorporates the radical "子" as a semantic element to denote its association with children, and the component "需" serves primarily to indicate pronunciation. Together, they create a compound where both characters semantically emphasize the concept of a young person, resulting in a term that specifically denotes a child or youngster.