What type of literary device is present in the sentence below?
Purple puppies like playing on the playground.

The correct answer is “Alliteration.”
Alliteration is a term used to describe a literary device in which a series of words begin with the same constant sound or as a method of linking words for effect. Alliteration is also called head rhyme or initial rhyme; alliteration is used poetically in various languages around the world, which include Arabic, Irish, Somali, Finnish, Icelandic, and German.

A more complex pattern of alliteration can be created when consonants both at the beginning of words and at the beginning of stressed syllables within words are repeated. There is one specialized form of alliteration, symmetrical alliteration, alliteration containing parallelism or chiasmus.