Describes a state where two entities are positioned so closely together that there is virtually no gap between them, often implying a physical proximity.

Refers to a relationship or connection that is characterized by a high degree of interdependence or intimacy, suggesting that the parties involved are intricately linked and cannot be easily separated.

Indicates a closeness in both physical arrangement and relational depth, emphasizing a strong bond that is crucial to the identity or function of the involved parties.