The first line of the second stanza of Robert Lowell’s poem, “For the Union Dead,” reads: “Once my nose crawled like a snail on
the glass.” This is an example of _____. simile to suggest the speaker’s excitement at seeing the fish
conceit to set the tone of sadness throughout the rest of the poem
hyperbole to express the intensity of the speaker’s memory
metaphor to compare the window to a slowly moving snail
Anytime you are using somebody else's words or sometimes even ideas you want to make sure to credit them. You also don't want to make a risk of being accused of plagiarizing.