Alliteration, repetition, parallelism, metaphor, and allusion are the following:
Literary as well as rhetorical devices.
Ways of adding meaning or emphasis in writing.
Elements of grammar.
<em>Alliteration, repetition, parallelism, metaphor and allusion are rhetorical devices. They are used by the author in order to add meaning and convey a message. These are also elements of grammar. </em>
<u><em>Alliteration-</em></u><em> intentionally repeating the same letter or sound at the beginning of various words. </em>
<u><em>Repetition-</em></u><em> repeating words or phrases throughout a text</em>
<u><em>Parallelism-</em></u><em> using the same sentence structure several times</em>
<u><em>Metaphor-</em></u><em> stating something in words of another thing</em>