Emphasis and Alliteration

Emphasis- A range of techniques for stressing a word, phrase, or idea throughout a story. A writer may use repetition of a single word (He felt nothing but fear, fear, fear), by using different type-face (He felt nothing but fear), or by building a series of synonyms (He felt nothing but fear, terror, horror). An author may also repeat a unique word or phrase throughout a story to draw emphasis to a certain idea, characterization, etc.

"This I have known ever since I stretched out my fingers to the abomination within that great gilded frame; stretched out my fingers and touched a cold and unyielding surface of polished glass" (Lovecraft, "The Outsider" 321). 

Alliteration- When the initial sounds of a word, beginning with either a consonant or a vowel, are repeated in close succession: "Such a lot the gods gave to me-- to me, the dazed, the disappointed; the barren, the broken" (Lovecraft, "The Outsider" 316). Alliteration may accentuate the beauty of language in a given context, or unite and emphasize words or concepts through a kind of repetition.