1. brothers
2. younger brother
3. I, me (humble term used by men in public speech)
4. brotherly
5. fraternal

classifier: 個

1. (colloquial) my brother; bro (A term of address for a close friend of similar age or younger)
2. A humble term of self-address used by a man to people of the same generation.
3. my brother; bro (A term of address for a close friend of similar age or younger)

1. (older and younger) sisters
2. sister (school, city etc)