Alliteration: Alliteration is a Literary Terms. Alliteration means repetition of a consonant in two or more words. Notice the following line from Pope's The Rape of the Lock:
Puffs, powders, patches, Bibles, billet-doux.
Here "p" has been repeated thrice and "b" twice. So there are two cases of alliteration in this line. Alliteration is used both in poetry and in prose for musical effects.