Based on <span>third stanza of the poem, “O Captain my Captain!” the third line is an example of the element Alliteration. The words that rhyme in this line are"safe", "sound" and "ship". Alliteration is used when the first consonant sounds of the words in the line rhymes. On the other hand, assonance is on the vowel sounds of the words in the line. Hope this answer helps.</span>
