plagiarization vs plagiarisation

plagiarization and plagiarisation both are nouns.

Word	Noun	Adjective	Verb	Adverb
plagiarization	Yes	No	No	No
plagiarisation	Yes	No	No	No

As nouns, plagiarization and plagiarisation are synonyms defined as:

plagiarization and plagiarisation: the act of plagiarizing; taking someone's words or ideas as if they were your own

Other synonyms of plagiarization include piracy, plagiarism.

plagiarization (noun)	plagiarisation (noun)
the act of plagiarizing; taking someone's words or ideas as if they were your own	the act of plagiarizing; taking someone's words or ideas as if they were your own