He saved the company with a bold decision.
With her fearless personality, she faces any difficulty.
勇敢 means 'brave' or 'heroic' and is more about valor in the face of danger, whereas 豪胆 focuses on a bold, unflinching temperament.
Standard kanji spelling; 豪 suggests 'magnificent' or 'heroic' boldness.
Alternate kanji spelling; 剛 suggests 'sturdy' or 'firm' boldness. Less common than 豪胆.
Compound of 豪 (ごう, 'magnificent, heroic') and 胆 (たん, 'gallbladder, courage'). The combination conveys a spirit of fearless boldness. The alternate form 剛胆 uses 剛 (ごう, 'sturdy, firm') with a similar meaning.