2. Good subjects for a comparison should

Have similarities and differences.

Explanation:

not concrete, existing in thought or as an idea but not having a physical or concrete existence

huck's relationship with food is a prominent theme throughout the novel, and during his time on jackson's island and working his way down river, huck revels in and enjoys his ad hoc dining. in the first chapter, we observe huck is ironically trapped in a "civilized" world, when he would prefer to live freely in nature.