Simile is a comparison of two things using the words like or as.. He looks like an elephant. Symbolism is a literary method of extending meaning through the use of commonly accepted symbols or something that stands for another thing.
Scholarly literature is written by researchers who are experts in their field. People who write for academic journals are employed by colleges, universities, or other institutions of education or research. They submit articles to the editors of the journals, who decide whether or not to publish the article.
Periodical literature (also called a periodical publication or simply a periodical) is a published work that appears in a new edition on a regular schedule. The most familiar counter-examples are the newspaper, often published daily, or weekly.