1) Business 2) Business interactions 3) Business relations 4) Business transactions 5) Communication 6) Connections 7) Contact 8) Interchange 9) Reciprocation 10) Traffic 11) Transactions 1) Commerce 2) Commercialism 3) Communication 4) Downtick 5) Events 6) Hands 7) Operations 8) Proceedings 9) Relations 10) Relationships 11) Renting 12) Transaction 13) Truck 14) Uptick 
[n] - social or verbal interchange (usually followed by `with`)