Different ways on how you can express 'BUT' or 'HOWEVER' in Chinese

但是 vs 可是 vs 然而 vs 不过 
Dànshì vs kěshì vs rán'ér vs bùguò

Other than the formality of the tone of your expression, the differences in these words are very small.
但是-Nevertheless, but
可是 -but
然而 -but (the most formal uage of 'but or however', it is also 'yet')
不过-but (the most informal usage of 'but or however' in Mandarin Chinese)

They are used interchangeably at varying degrees.

Liz, talking with her hands


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