For quite some time now, I've been wondering how to say "relationship", as in "I'm in a relationship with that woman",

or "we've a business relationship".

Finally, lacking a better alternative, I decided to be using the noun {boq} "alliance, bloc, coalition".

.. Which of course, isn't ideal, but I can't find anything better.

I'm still wondering though, how to say things like "what's the relation between these two events ?" or "how are these two events related ?".