Connection or attachment.
The point at which the fencers are close enough to join blades, or to make an effective attack during an encounter.
The feeling of being compelled, drawn in, connected to what is happening, interested in what will happen next.
An appointment, especially to speak or perform.
The period of time when marriage is planned or promised.
In any situation of conflict, an actual instance of active hostilities.
A personal relationship between two people.
Matching each member of one set with exactly one member of another set.
Injective, being an injection: having the property that no two elements of the domain are mapped to the same image.
Involving direct communication between two people.