1) If bạn fall, a freind will pick bạn up. A best freind will push bạn back down.

2) If bạn want food, a freind will get bạn food. A best freind will make bạn get her/him food.

3) If bạn get hurt, a freind will run to your aid. A best freind will gabb your arm and say "Suck it up."

4) If bạn are late for the bus, a freind will stay behind. A best freind will rush you.

5) If bạn are sad, a freind will comfort you. A best freind will make it all ok.

I have a best freind just like this so I decided to put it in words...