* "'He is all pine and I am apple orchard.' / My apple trees will never get across / And eat the cones under his pines, I tell him. // He only says, 'Good fences make good neighbors.'"
In this simile, the speaker compares himself to an apple orchard and his neighbor to a pine forest. This comparison emphasizes the differences between the two men and their properties.
* "Something there is that doesn't love a wall, / That sends the frozen-ground-swell under it, / And spills the upper boulders in the sun- // And makes gaps even two can pass abreast."
In this simile, the speaker compares the force that breaks down walls to a frozen-ground-swell. This comparison suggests that the natural world is more powerful than human-made structures.
* "We keep the wall between us as we go. / To each the boulders that have fallen to each. And some are loaves and some so nearly balls // We have to use a spell to make them balance: 'Stay where you are until our backs are turned!' / We wear our fingers rough with handling them."
In this simile, the speaker compares the boulders in the wall to loaves of bread and balls. This comparison emphasizes the difficulty of working with the heavy, uneven materials.