The pleasure dome refers to Coleridge's poem Kubla Khan. As he says, it is a beautiful place that is surrounded by rough landscape. Imagine an oasis in the middle of a desert, except the oasis is more beautiful and the desert is much worse. It is found in the mystical land of Xanadu and is the home-place of Kubla Khan.
Answer: It symbolizes the perpetual coming and going of things.
Explanation:
Some parts of speeches are :-
Noun
Verb
Adjective
Conjunction
My pencil is red in colour ( Pencil is a noun )
He is playing in the playground ( Playing is a verb )
The white cheescake is on the table ( white is an adjective )
I like tea and coffee ( and is a conjunction )
Hope this helped, ;)