according to you , what is friendship?

Friendship is a kind of relation i between two persons having very strong bonding. Like a person on whom you believe the most. A person from that you can share anything without any hesitation. A person who stands besides you in your any situation whether its your happiness or your worst time. I think that would be enough to explain friendship.

Being always there for your friends even in the bad times.

Its a special bond and its least informal relationship.