(n): the spatial arrangement of something as distinct from its substance
(n): a relation between things or events (as in the case of one causing the other or sharing features with it)
(n): an abstraction belonging to or characteristic of two entities or parts together
(n): the process of bringing ideas or events together in memory or imagination
(n): the cognitive processes whereby past experience is remembered
(n): an instrumentality that connects
(n): an artifact (or system of artifacts) that is instrumental in accomplishing some end
(n): shifting from one form of transportation to another
(n): the act of moving something from one location to another
(n): the act of bringing two things into contact (especially for communication)
(n): the act of changing the unity or wholeness of something
I use this in preference to connection. It is so much sexier :)