plagiarism

Copying of another person's ideas, text, or other creative work, and presenting it as one's own, especially without permission; plagiarizing.

Even if it's not illegal, plagiarism is usually frowned upon.

Copy from one, it's plagiarism. Copy from two, it's research.

Text or other work resulting from this act.

The novel was awash in plagiarism, with entire passages lifted verbatim.

The instance of plagiarism.