赞赏 (zànshǎng) means 'to admire and praise' — it combines genuine appreciation with verbal approval, often for someone's talent, effort, or achievement. It's stronger than 欣赏 (xīnshǎng 'to appreciate/enjoy'), which focuses on personal enjoyment, and more formal than 称赞 (chēngzàn 'to praise'), which is just spoken praise. 佩服 (pèifú) is 'to admire' with a sense of respect for someone's ability, while 赞赏 adds an element of commendation.