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Is this excerpt from "A Birthday" by Christina Rossetti an example of a simile, a metaphor, or an analogy? My heart is like a singing bird Whose nest is in a water'd shoot; My heart is like an apple-tree Whose boughs are bent with thick-set fruit It is a metaphor because it compares two dissimilar entities. It is a simile because it reflects a direct comparison between two things. It is an analogy because it emphasizes the understated similarity. It is an analogy because it compares two pairs of corresponding elements of two things.