This is the repetition of consonant sounds at the beginning of words. An example of alliteration can be found in the poem "There Will Come Soft Rains" by Sarah Teasdale:

"And swallows circling with their shimmering sound..."

Assonance
This is the repetition of vowel sounds within a word. An example of assonance can be found in the following poem by Edgar Allen Poe:

"Once upon a midnight dreary, while I pondered weak and weary..."

The Raven

Consonance
This is the repetition of consonant sounds at the end of words. An example of consonance is found in the following poem by Adrian Henry:

“Love is feeling cold in the back of vans
Love is a fanclub with only two fans
Love is walking holding paintstained hands…"

Love is