Friendship is a relationship between two countries in which they help and support each other. The President set the targets for the future to promote friendship with East Europe = goodwill
You use friendship to refer in a general way to the state of being friends, or the feelings that friends have for each other. a hobby which led to a whole new world of friendship and adventure
A friendship is a relationship between two or more friends. She struck up a close friendship with Desiree during the week of rehearsals After seven years of friendship, she still couldn't tell when he was kidding
The state of being friends; friendly relation, or attachment, to a person, or between persons; affection arising from mutual esteem and good will; friendliness; amity; good will