rapport
n.a friendly relationship where people understand each other's ideas and feelings well. When you have this, you find it easy to talk and work together.
n.a close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas and communicate well.
“The teacher has a great rapport with her students.”
“Building a strong rapport with clients is essential for long-term success in any sales-driven industry.”
“The negotiator spent hours establishing a genuine rapport with the opposing party before attempting to discuss the more contentious points of the treaty.”
Often used with the verbs 'build', 'establish', or 'develop'; typically takes the preposition 'with'.
While 'between' is used for the relationship itself, 'rapport' is most naturally paired with 'with' to describe the connection to another person.
“Be careful what you wish for: the returning president thought his rapport with Putin would be enough to get Russia to sign up to an immediate ceasefire.”
“So too is the rapport between the men, who discuss their faith in unembarrassed fashion and talk about what Jesus means to them.”
Borrowed from French rapport.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.