Although the poem is not included here, the most likely scenario is that the poem, due to its title, includes examples of similes. A simile is a direct comparison that is made by comparing two things through the use of words such as "like" or "as."
Similes are some of the most common types of figurative language in literature. Some examples of these are:
"Her smell was as fresh as a spring day."
"Her mouth, red like a rose, curved to show a smile."