This is a great relationship. It could be between any person. Friendship could be in the family, in a classroom, or on the playground. Moreover, it could be between worldwide people. I like this because it make me feel happy. That's why it is my favorite word.
I don't like this word, because it brings lots of misery to large innocent population, including children and women. Maybe war has some positive side, but in my view , there are lot's of negative effects. I believe proper education might help people to abstain from war.