- They can range from being a Reciprocal Friend to being a Non-Reciprocal Friend.
- They can range from being a Conscious Friend to being a Non-Conscious Friend (such as a loyal dog).
- They can range from being a Long-Distance Friend, to being a Nearby Friend, to being a Companionate Friend (e.g. a housemate).
- See: Social Relationship, Affection, Interpersonal Relationship, Social Exchange Theory, Equity Theory, Attachment Style, Sympathy.
- A person other than a family member, spouse or lover whose company one enjoys and towards whom one feels affection.
- A boyfriend or girlfriend.
- An associate who provides assistance.
- A person with whom one is vaguely or indirectly acquainted
- A person who backs or supports something.
- An object or idea that can be used for good.
- Wiktionary is your friend.
- QUOTE: … we found that while most people assume friendships are two-way, only about half of friendships are indeed reciprocal. These findings indicate a profound inability of people to know who their friends are, perhaps because the possibility of non-reciprocal friendship challenges one’s self-image. We like them, they must like us.