The word "乐园" is formed through semantic combination, where two independent characters, each with their own meaning, are joined to create a new, compound concept. The first character, "乐" (lè), means "joy" or "happiness", and the second, "园" (yuán), means "garden" or "enclosed ground". They are placed together in a modifier-head structure, where "乐" describes the essential quality of the "园", thus conceptually fusing to mean "a garden of joy" or "a paradise", representing a place defined by and dedicated to happiness and pleasure.