网页2013年2月7日 — 快乐 is the same as 乐, while 喜乐 is happiness, joy. When 喜 and 乐 are together, you're REALLY happy (not only 喜 but also 乐), you are laughing loudly, or other actions, for example, your emotion after you win a lottery ($999999999999999). I don't agree that 喜乐 is 喜悦, because 乐 refers to music when 乐 is pronounced as yue4.