Difference between 喜乐 and 快乐？
I think what you mean is 喜悦 not 喜乐 though 乐 can also be pronounced as yuè . This is how I differentiate the two:


喜悦(xǐ yuè) is a passionate feeling of joy. This is usually
expressed in the form of a smile.
快乐(kuài lè) is a pleasant emotional response due to an external
stimuli. This is usually expressed in the form of laughter.


快乐 is more obvious than 喜悦.