Все достаточно легко, переводчик также в помощь:
1. A friend is a person who stands by you.
2. Friendship is a relationship which is important.
3. A neighbour is a person who lives near you.
4. Friendless is a person who has no friends.
5. A false friend is a person who can betray you.
Может быть, напутала первое и второе!