relationship

Relationship is on the Academic Vocabulary List.

Noun

(countable) When there is a relationship between things, there is a connection.
There is a clear relationship between fire and heat.
(countable) When people are connected by family, there is a relationship between them.
There is a family relationship between Bob Smith and John Smith.
(countable) When people are friends or partners, they have a relationship.
John is the boyfriend of Joan. They have a relationship.