I always thought that the word "nice" can be also a synonym for "beautiful" (external beauty or external appearance) For example:
She is nice = She looks good.
but yesterday I was told by a non native English speaker that according to his native language dictionary (Ukrainian - see here) the word "nice" doesn't refer to external beauty. Then I checked it out in Cambridge dictionary in order to prove that "nice" refers also for external beauty, but to my great surprise I saw that there is no any consideration about external beauty among its definitions for the word "nice". So I'm already not sure if this meaning to this word is correct or not.
An example that simplify my meaning is:
"There were two women there: one was fat and one was skinny. Who was nicer (=looks better)?"