Meaning : Someone who uses another person's words or ideas as if they were his own.
Synonyms : literary pirate, plagiariser, plagiarist, plagiarizer
Meaning : Someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation.
Synonyms : buccaneer, sea robber, sea rover
Meaning : A ship that is manned by pirates.
Synonyms : pirate ship
Meaning : Copy illegally. Of published material.
Meaning : Take arbitrarily or by force.
Example :
The Cubans commandeered the plane and flew it to Miami.
Synonyms : commandeer, highjack, hijack