In the poem "Mending Wall," the author made the words in the poem have more than just one meaning. This means that the poem can be about more than just fixing a wall. The author used words like "wall" and "fence" to represent barriers or divisions between people. The poem talks about how the wall is not really needed because there are no cows to keep on one side or the other. This could mean that sometimes people create barriers or walls between themselves, even when they are not necessary. The poem also talks about how the author's neighbor says, "Good fences make good neighbors," which means that having boundaries can be good in some ways. This could mean that sometimes people think that it's important to have boundaries between each other to keep things peaceful. So the poem is really about how sometimes we create barriers between us and other people, even when it's not necessary, but it also talks about how having boundaries can be good in some situations.