Here's a breakdown:
* Kapatid means "sibling"
* Babae means "female" or "woman"
You can also use the shorter version, ate, which is used for older sisters, and bunso for younger sisters.
Here are some examples:
* Ang kapatid kong babae ay doktor. (My sister is a doctor.)
* Si Ate ay nasa ibang bansa. (My older sister is in another country.)
* Si Bunso ay nag-aaral sa paaralan. (My younger sister is studying in school.)