Final answer:
The bold words represent perfect rhyme and assonance, creating a sense of finality.
Step-by-step explanation:
The sound devices represented by the bold words are perfect rhyme and assonance. The words 'sea' and 'Lee' rhyme, as do the words 'me' and 'sea'. This is an example of perfect rhyme. The words 'shut', 'up', and 'sepulchre' all contain the same vowel sound, the /ʌ/ sound, creating an example of assonance.
The words 'shut', 'up', and 'sepulchre' contribute to creating a mood of finality. These words suggest a sense of closure and the end of something, enhancing the mood of the poem.
Learn more about Sound devices in poetry