pirate vs plagiariser

pirate and plagiariser both are nouns.

Word	Noun	Adjective	Verb	Adverb
pirate	Yes	No	Yes	No
plagiariser	Yes	No	No	No

As nouns, pirate and plagiariser are synonyms defined as:

pirate and plagiariser: someone who uses another person's words or ideas as if they were his own

Other synonyms of pirate include literary pirate, plagiarist, plagiarizer.

pirate (noun)	plagiariser (noun)
a ship that is manned by pirates	someone who uses another person's words or ideas as if they were his own
someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation
someone who uses another person's words or ideas as if they were his own

pirate (verb)	plagiariser (verb)
take arbitrarily or by force
copy illegally; of published material