Plagiarism is when another author's language, thoughts, ideas, or expressions are presented as one's own. Plagiarism is defined variously in educational settings depending on the institution. Plagiarism is regarded as a form of academic cheating. The main purpose of this paper is to analyze systems and discover the accuracy of systems for plagiarism, using documents of different sizes. It is critical to raise researcher knowledge of plagiarism of words, ideas, and graphics in order to avoid unethical writing methods. Updating author instructions and informing plagiarists of academic and other consequences of unethical behavior should be done by consulting linked papers. Most instances of redundant and "copy-and-paste" writing are said to be caused by a lack of innovative thinking and weak academic English skills. Plagiarism detection software mostly depends on text similarity reporting. Manual checks, on the other hand, are required to detect improper referencing, copyright breaches, and poor English writing. [ABSTRACT FROM AUTHOR]