The dialogue shows that Furtunato thinks Montrsor is playing a joke on him.
The answer is love. Really it is the "Word" that is supposed to be carried to others, but love would be synonymous for what the word was all about.
You should take a picture of what ur story is about for better understanding
It’s a simile not a metaphor because it says ‘LIKE a butterfly’ a simile is something that uses ‘like’ or ‘as’
