I. Reproducing a drawing or diagram without including information about where you found it.
II. Using someone else's words in your writing without putting quotation marks around them.
Plagiarism is the act of taking someone else's work and passing it off as your own. Both the examples could constitute plagiarism, which is an 'academic' offence. They might also constitute a breach of copyright, which is against the law. But without more information it would be difficult to judge. In the first example, is the drawing so simple that it could be in the 'public domain'? In the second example, have you used lengthy passages or just a phrase or two that could also be considered as being in the public domain. Not only is it good practice to give credit where credit is due, it also demonstrates your teacher that you researched your material.
A citation example for the keyword "plagiarism" would be: Smith, J. (2021). Understanding Plagiarism: A Guide for Students. Academic Press.
An example of an in-line citation for the keyword "plagiarism" would be (Smith, 2019).
Minimal plagiarism is whereby plagiarist presents someone's concept with different flow or punctuation
Representing someone else's ideas as though their were your own.
In a research paper, you can properly cite the keyword "plagiarism" by including it in the text and providing a citation in parentheses. For example, "Plagiarism is the act of using someone else's work without proper attribution (Smith, 2020)."
Accepting credit for someone else's work is an example of plagiarism, which is the act of presenting someone else's work as your own without proper attribution or permission. Plagiarism is considered a serious ethical violation in academic and professional settings.
copying large sections of text without proper citation
Paraphrasing someone's ideas carefully and not worrying about citation
plagiarism
Incremental plagiarism in a basic sense, is when a source is failed to be cited in only an area of work. For example if you write a speech and quote a famous speaker, but fail to cite the source/speaker.
Not always. Plagiarism is making a false claim that you created something original. If you copied a public domain source, it is not a copyright infringement, but still plagiarism. For example, you download a NASA photograph (all works created by the US government are public domain in the USA), modify it and submit it to a photo contest as your original work. That is plagiarism, not copyright infringement.
The prefix of "plagiarism" is "plagi-".