How is interpersonal relationships different from relationships with unfamiliar people?

First of all, interpersonal relationships are distinguished by trust. We are constantly in contact with unfamiliar people, we can even sometimes exchange a couple of phrases, but this does not make the person close to us. Interpersonal relationships are relationships built on mutual trust and respect. When you know you can be listened to and are able to listen in response. Contacts with unfamiliar people usually have a completely different character.