The word 繁茂 is formed by combining the character 繁, meaning "numerous" or "intricate", derived from ancient representations of complexity, with the character 茂, meaning "luxuriant", which incorporates the grass radical 艹 to signify plants and the component 戊 primarily for phonetic indication. Together, these characters semantically merge to denote lush, dense, and profuse growth, typically in reference to vegetation.