thoughts on friendship.

What is friendship?
What makes a friend a friend?
Is a relationship still a friendship if it becomes long-distance?
What is it if you no longer live life together?
Is a person still considered a friend if you don't talk for extended periods of time, then catch up and act as if the time lapse never happened?
What does it mean to love and care for a friend when they are far away?
At what point do you let go of an old friendship that gets lost by the wayside?
At what point is that lost friend no longer a friend?

Just some things I've been thinking on recently.
If you have any thoughts, please share. :)