plagiarism: a piece of writing that has been copied from someone else and is presented as being your own work
writing: the work of a writer; anything expressed in letters of the alphabet (especially when considered from the point of view of style and effect)
ribosome: an organelle in the cytoplasm of a living cell; they attach to mRNA and move down it one codon at a time and then stop until tRNA brings the required amino acid; when it reaches a stop codon it falls apart and releases the completed protein molecule for use by the cell