The speaker compares a deferred dream to rotten meat and garbage sitting in the hallway. This portrays the speakers attitude as being fustrated with society standards
A metaphore and simile are both be a comparison between two unlike things, however, a simile uses the words like or as to compare, rather than saying something is something. For example...
Simile:
She was as fast as a cheetah.
Metaphor:
She was a cheetah.
Hope I helped, and good luck!
The moral of the story is the main message.
B.) the few rank sedges personifies the house of usher!
Explanation; hope this helps