Difference between 还/更 in comparasion phrases What is the difference between 还 and 更 in some comparasion sentences? For me, it seems that both characters means that one of the object/person which is  being compared satisfies a certain characteristic even more than the other one. For example, in the following sentence, it seems that both can be used:

我很怕黑，但是他比我还/更怕.

But I'm not so sure of that. After reading a few more examples, it looks like that 更 has a more numerical/quantitative aspect than 还, which looks like more qualitative. So, for example, I would say: Yao Ming 比 Michael Jordan 更高, instead of using 还 and I would say 他比Megan Fox 还漂亮.

Are those intuition correct? Can someone explain these nuances? Thank you.
Both 还 and 更 have more than one meanings and the meaning of &quot;even more&quot; is overlapped between the two characters,
When it means  &quot;even more&quot; the two characters are interchangeable.

Yao Ming 比 Michael Jordan 高 = Yao Ming is taller than Michael
(It would be true even if Yao Ming was 5'3&quot; and  Michael Jordan was only 5'2&quot;)

~

Yao Ming 比 Michael Jordan 更/还高 = Yao Ming is even taller than Michael
(It would be true only if Michael Jordan was considered very tall)

~

她比 Megan Fox 漂亮 = she is more beautiful than Megan Fox
(it would be true even if she was just less ugly than Megan Fox)

~

她 比 Megan Fox 更/还漂亮 = she is even more beautiful than Megan Fox
(It would be true only if Megan Fox was considered very beautiful)

[比 (N) 还 (adj)] = [比 (N) 还要 (adj)]
[比 (N) 更 (adj)] = [比 (N) 更加 (adj)]