Translation:Kaʻiulani is the younger sister of Malia.
...(kaikunāne) means brother, and (kaikuahine) means sister. However, ... these terms apply specifically to the brother of girl, or the sister of a boy.
This means that if you are a boy and want to refer to your brother , you need to identify whether he is your older brother (kaikuaʻana) or younger brother (kaikaina). ...the same terms are used to identify the older and younger sister of a girl. (Page 179, Hawaiian Language Fundamentals ʻŌLELO ʻŌIWI, Hōkūlani Cleeland)