Simile is a figure of comparison in which two dissimilar things are compared explicitly for a point of similarity. The simile is usually introduced by such words as: like, as, such as, just as etc.
Example: 1. " what you effuse may return as the seasons return". This is an example of simile because there is direct comparison between the "return" of ones "effusion" with that of the seasons. 2."May be just as much as the seasons". This is also an example of simile. There is a direct comparison between the quality of the return of the human beings as well as that of the seasons.