What is the diction of short story (Young Goodman Brown) ? The author's choice of words??

This is a
fairly big question -- broadly considered,means word choice, and author's obviously choose
thousands of words when they write stories.  What you are actually being asked to consider, I
think, is  to give examples of specific diction that enhance the meaning of the story
or contribute to the overall effect of the story. By considering it this way, you
have a more focused purpose to your analysis.

With that in mind, you should
think about what this story is about or what it means.  It is a story of a young man who is
tempted to a meeting of witches being held in the dark forest.  He leaves his wife and takes
this journey with much trepidation, and in the final moment of the meeting decides to turn away
from the devil's promises and return to town.  Unfortunately, the experience leaves him
embittered and cynical.

Here are a couple of examples...