traffic

the aggregation of things (pedestrians or vehicles) coming and going in a particular locality during a specified period of time

buying and selling; especially illicit trade

the amount of activity over a communication system during a given period of time; "heavy traffic overloaded the trunk lines"; "traffic on the internet is lightest during the night"

social or verbal interchange (usually followed by `with')

deal illegally; "traffic drugs"

trade or deal a commodity; "They trafficked with us for gold"