There are many Types of Relationship.
What type of relationship that I have with someone depends upon the roles that we are both playing within the relationship.
As the roles change, so does the type of relationship.
Husband & wife, father & son, mother & daughter are all different types of relationship.
Teacher & pupil, trainer & trainee, therapist & client, coach & coachee are all different types of relationship.
Director & manager, manager & worker, employer & employee, employee & customer are all different types of relationship.
As I change my role within a relationship, I change the type of relationship that I am having and how I relate to another person.
A mother & daughter may relate to each other as a parent & child during the early years of their relationship and relate to each other as best friends later in life, even though they remain a mother and a daughter by virtue of their ancestral lineage rather than as their roles in life.