Best friend - Someone that always with you when you laugh or when you cry. And willing to be your friend till the end of your life :)
Close friends - Someone that you always hang out with. Gossip-ing with 'em. Laugh with 'em. but still, you will feel like you lose something.. -.-
Friends - Maybe someone like your classmates. Someone that you know for years.
Acquaitances - Just a person that you know. You are not interested to make 'em as your friend.
