Metaphor - a comparison made by calling one item another item
For example, "the evening of life" or "sunshine of our love"

Simile - a comparison using "like" or "as"
For example, "As snug as a bug in a rug" or "he drinks like a fish"

Personification - to think of or represent an inanimate object as a person.
For example, "The rocks will cry out his name" or "the planets danced in their orbits"

Alliteration - the repetition of the same consonant sounds or different vowel sounds at the beginning of words or stressed syllables.
For example, "seven silver swans swam" or "even Alice's otter ate the ice-cream"