For me, friendship is a relationship between 2 or more people that couldn't be ignored by anyone. Friend is someone that you can trust most except your family. Friend(s) will never betrayed each other. If did, then he/she/they is/are not your true friend. Friend also can be divided/said to best friend and ordinary friend. Best friend(s) is/are not found easily. Best friend(s) is/are friend(s) that understand you more than others and be closed to him/her/them. Ordinary friend(s) is/are just friend(s) that play and talk together during free time.
As a conclusion, these are my opinions about friendship. And I've found some best friends and bunch of ordinary friends. How about you?!