It's a very common word and is used in various contexts, such as:
* Referring to stars in the night sky: 별이 빛나요. (Byeol-i bichnayo.) - The stars are shining.
* As a metaphor for something bright or beautiful: 그녀는 별처럼 아름다워요. (Geuneo-neun byeolcheoreom areumdawoyo.) - She is beautiful like a star.
* In names: There are many Korean names that include "byul", signifying brightness or hope.
Let me know if you have any other Korean words you'd like to know the meaning of!