Alliteration is defined as a repetition of the first sound or sounds in two or more words that follow each other in succession. These words may be adjacent or may be separated by a word or even a few words. Alliteration is found very often in poetry; but, is also found in many works of literature because it adds interest to the written and spoken word.
1) I had to hurry home because grandma wanted her waffles.
2) The big bad bear attacked all the little bunnies in the forest.
3) Come and clean your closet.
4) Go and gather the green leaves in the lawn.
Assonance is the repetition of vowel sounds inside words that are close to one another.
Example: He looked at the wooden bookcase.
Onomatopoeia - the use of words (such as hiss or murmur) that imitate the sounds associated with the objects or actions they refer to.
Baa baa black sheep, have you any wool?
Yes sir, yes sir, three bags full!
One for the master, one for the dame,
And one for the little boy who lives down the lane.