How are sandburg's "grass" and stevens's "the anecdote of the jar" similar?

The two pieces deal with nature. They both describe how the wildness and slovenliness could take over such vast area. No matter what you put in a place dominated by nature, untamed, in no time will the object(s) you placed they will soon belong to nature itself. Like the piles of bodies stated in Sandburg's "Grass" or the jar in Stevens' "The Anecdote of the Jar", a once wild object will soon be overpowered and dominated by its surroundings.
 
I hope this helps. Have a nice day!