The term 'become worn away' can be summarized by the crossword solution 'ERODE, ' which is a five-letter word. Erosion is a natural process in which soil, rocks, and other materials are gradually worn away by wind, water, or other natural forces. It is a slow process that can take place over thousands of years, but it can also occur quickly due to human activities such as deforestation and overgrazing. Erosion can have a significant impact on the environment, leading to the loss of valuable topsoil and the destruction of habitats.