What is friendship? 

How did it exist? Who created it? The simple existence of friendship starts with one person finding another person in need of any situations. It can be good or bad. It can be more than two people. 

Friend was a simple concept used by one person when he or she was alone and looked for a companion to talk to in times of trouble or happiness. Someone to share your joy with, who brings a smile on your face when you are alone. And 'ship' was used to sail on that particular boat 'together'. That ship can carry more than two people.