Learn English – The relationship of/between company x and company y

word-choiceword-usage

The relationship of company x and company y

The relationship between company x and company y

Which one is the best for the context of law terms?

Best Answer

I assume you want to designate the relationship between them in order to, for example, describe it (as good, bad, cooperative, competitive, etc.).

The relationship between company x and company y is correct. We normally do not use the other way.

Between is cited here in the example sentence provided for the relevant sense of relationship:

3. an emotional or other connection between people: the relationship between teachers and students.

Some English learners may feel that the relationship of x and y is correct because we sometimes use [something] of [something] similarly to 's. For example the entrance of the building, a friend of my grandmother. But we do not generally use this form for a possession of the type X and Y's relationship.