What's the difference between cargo and supercargo?

Cargo

Definition:

(n.) The lading or freight of a ship or other vessel; the goods, merchandise, or whatever is conveyed in a vessel or boat; load; freight.

Example Sentences:

(1) Measures include tightened financial restrictions and cargo inspections.
(2) Four pilots with "extensive experience" in transporting some of the world's most precious cargo, including white rhinos and penguins, were on the flight.
(3) He’s bought the cattle, booked the container and even reserved a space on a cargo ship.
(4) A dramatic shift in asylum policy in 2001 helped Howard turn around poor polling and win the November federal election, after he refused permission for the MV Tampa to enter Australian waters with its cargo of rescued asylum seekers.
(5) Its loss would be a major blow to Ukraine and would also allow the rebels to receive large cargo planes with supplies in addition to truck convoys from Russia .
(6) The organisation had never however gained access to the "Cargo Building", the most notorious detention centre, in Srinagar.
(7) Field studies of human flora carried out in remote environments are often compromised by problems associated with media, equipment or cargo limitations.
(8) Vine also criticises the searching priorities of the Border Force and HM Revenues and Customs by highlighting that 68% of freight consignments targeted for checks at the border are actually undergoing a physical examination while 43,000 low-risk cargoes were being checked.
(9) Facebook Twitter Pinterest Workers unload a cargo plane carrying humanitarian aid from Saudi Arabia at the Baghdad International Airport in Iraq.
(10) The Los Angeles police department, California highway patrol, firefighters and the coastguard conducted a search, while cargo vessels slowed during their passage through the main channel so as to minimise disturbance.
(11) Also in August, terrorist attacks were intensified, including speedboat strafing attacks on a Cuban seaside hotel "where Soviet military technicians were known to congregate, killing a score of Russians and Cubans"; attacks on British and Cuban cargo ships; contaminating sugar shipments; and other atrocities and sabotage, mostly carried out by Cuban exile organizations permitted to operate freely in Florida.
(12) When a boat’s hull was packed with human cargo, it would depart southward to Thailand or Malaysia.
(13) When flight controllers initially could not confirm deployment of the antennas in the minutes following its launch, they selected the backup rendezvous plan of two days and 34 orbits instead of the planned four-orbit, six-hour rendezvous.” A spokesman at Russian mission control said that the Progress “reached orbit but the full volume of telemetry (data transmissions) is not being received.” Russia’s mission control website said that the ship would dock with the ISS, where the international crew of six people awaits the cargo, on April 30.
(14) Authorities were also questioning cargo workers at the airport and employees of the local shipping firms contracted to work with commercial logistics companies.
(15) Two US marine C-130 cargo planes arrived in Tacloban, the coastal city where virtually every building was destroyed by the typhoon's huge storm surge, and were unloading emergency items on Monday evening – the first wave of an aid operation taking in dozens of countries and agencies.
(16) It is sending 329 tonnes of medical and relief cargo.
(17) Go further back, and the UK's proud claim to be "a trading nation" was established with consignments of the bloodstained crops of cotton and sugar, to say nothing of the human cargo that went with them.
(18) Qatar has negotiated new cargo handling arrangements in the Omani ports of Sohar and Salalah, avoiding the need for goods to stop in the UAE.
(19) This path was built to link the tiny fishing settlements along the edge of the loch and allow the precious cargo of "silver darlings" to be carried ashore.
(20) We are working out different options for a water landing.” Facebook Twitter Pinterest A Progress cargo vessel docked at the International Space Station in January 2014.