The term "over" refers to a position that is higher than or above something else. For example, if a bird is flying over a tree, it means the bird is at a greater height than the tree. This concept can apply to physical objects, such as a bridge that spans over a river, or to abstract ideas, like having an overabundance of resources. In addition to its spatial meaning, "over" can also indicate a sense of excess or superiority. For instance, if someone has overachieved in their studies, it means they have performed better than expected. This usage highlights the idea of surpassing a standard or limit.