The word 茂盛 is formed by combining two characters, 茂 and 盛, each contributing a similar meaning related to lushness and vitality. 茂 denotes luxuriant, thick growth, often of plants, while 盛 conveys flourishing, abundant prosperity. Together, they reinforce each other to create a compound word that intensifies the concept of vigorous, thriving growth, typically used for vegetation or metaphorical prosperity.