Contrast and contrast, as two important rhetorical devices in literature, although they are somewhat similar in form, have significant differences in practical use.
First of all, contrast is to emphasize the differences between two or more things by highlighting their differences, thus deepening the reader's understanding of things. It is often used to express a strong contrasting relationship, such as good and bad, beautiful and ugly, etc. In the contrast, the author will depict these differences to provoke the reader's thoughts and feelings.
Duality, on the other hand, is to put two sentences with similar structures and opposite meanings together to form a sense of formal balance, so as to produce a unique aesthetic effect. The use of dual sentences can make the language more rhythmic and make the sound of the text more harmonious.
From the perspective of expression, contrast pays more attention to the contrast between things and the emphasis on contrasting effects, revealing the essence and characteristics of things through the comparison of different points of things; Duality, on the other hand, pays more attention to the symmetry and beauty of the language form, and achieves the expression of beauty through the balance of language structure.
In terms of application, contrast is often used in expository essays and discussions, by contrasting different things or opinions to strengthen the author's point of view or emotion; Duality, on the other hand, is more used in poetry and prose to show the harmony and beauty of language.
In short, contrast and duality, although both literary rhetorical devices, differ significantly in form and expression. Contrast focuses on the contrast of things and the emphasis on differences, while contrast focuses on the balance and beauty of the form of language. In literary creation, the correct use of these two rhetorical devices can better express the author's intentions and emotions and improve the artistic expression of the work.