trader-n; 3 Senses

Sense Number 1: a dealer of wares or goods

Commentary: TRADER[+/-individual][+wares]
NOTE: can be either an entity (e.g., a nation) or an individual

There were many fur traders in North America during the 18th century.
Mary is a trader who specializes in Irish ceramics.
The government suspects that nation has become a trader of nuclear weapons.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: person who buys and sells financial products, e.g. stocks

Commentary: TRADER[+individual][+financial_products]
NOTE: always an individual or group of them, not an entity.

Several traders at the stock exchange were indicted last week.
John worked as a bond trader for three years on Wall Street.
Many traders have long positions on oil futures.

WordNet 0.0 Sense Numbers: 1b

Sense Number 3: a ship

Commentary: TRADER[+artifact][+ship]

The Coast Guard inspected some small traders off the Florida coast.

WordNet 0.0 Sense Numbers: 2