A simile is a comparison of two unlike things using like or as.

The black hole is like a vacuum.

The black hole is as big as a elephant.

Metaphor is a direct comparison of two unlike things.

The sky was an erupting volcano.

The city was a dark forest.

Personification is when you give human qualities or abilities to an object or animal.

The leaves greeted the people in the park.

The grass scratched the people as they walked by.

Imagery is the use of words and phrases to create a mental picture.

Wait theirs nice sweet colorful cake.

I want the sweet chocolate cake!

Alliteration is the repetition of consonant sounds within a text.

Tim touched the turtle very lightly.

The turtle tried to bite his hand off.