茂: Prosperous, flourishing, and vigorous. This is an auspicious character, often used in personal names to symbolize a thriving and soaring career, and it is believed to lend support to one's professional fortune.

桦: The tree species, birch. "Birch" symbolizes the toughness akin to a tree, unyielding to wind and rain, metaphorically representing a robust physique conducive to good health.