Metaphor is a rhetorical noun (a figure of speech).

In article writing, especially in argumentation, analogy and metaphor are often used as argumentation methods. These methods are closely related to logic and rhetoric, but they are not exactly the same.

Analogy is the application of analogical reasoning in argumentative writing, and it is a similar comparison method. The so-called "analogy" means "analogy" and "comparison". Through the analysis of "A", "analogy" to "B" with the same attributes; Then, from the "comparison" between the two, we can get some enlightenment and explain some truth. In other words, it is an argument method that compares two or more similar things, and explains the attributes of B things with some attributes of A things. In logical thinking, it is a way of thinking based on individuality and using analogical reasoning to deduce individual conclusions.

Analogy consists of analogy points (similarities) of subject case (compared) and object case (analogist). The nominative case is the object of an article, and it can only be unique in the same argument, that is, in an article. Object cases are cases with the same or similar nature that the author seeks to explain the subject cases, and the number is uncertain. The analogy point is the same attribute of the subject and the object, and the same number is uncertain. Zou Ji satirized the King of Qi. The main case is Qi Wang's "asylum", the object case is Zou Ji and Xu Gong's more beautiful "asylum", and the analogy point is "asylum".