Moving pedestrians or vehicles, or the flux or passage thereof.

Commercial transportation or exchange of goods, or the movement of passengers or people.

Illegal trade or exchange of goods, often drugs.

A noun "traffic" represents the exchange or flux of information, messages or data, as well as the relay of formal written messages in cb radio and the amount of attention paid to a particular printed page in advertising.

Commodities of the market.

(intransitive) To pass goods and commodities from one person to another for an equivalent in goods or money; to buy or sell goods.

(intransitive) To trade meanly or mercenarily; to bargain.

(transitive) To exchange in traffic; to effect by a bargain or for a consideration.

(Philippines) congested