Per the 2020 - Panola Pathfinder Student Handbook, pg 26:

Plagiarism shall be defined as the appropriating, buying, receiving as a gift, or obtaining by any means another’s work and the unacknowledged submission or incorporation of it in one’s own written work. 

Citation is how you avoid plagiarism and copyright violations.

Citation - tells your reader where a quote or idea came from

Copyright - set of laws aimed at protecting people's ideas, words, concepts

Plagiarism - act of passing off someone else's work as your own