Cách sử dụng
The word 'coarsen' means to become rough or less refined. It is usually used when describing a process or an object. For example, if you overuse a piece of cloth, it can coarsen and become rough to the touch. Similarly, if you add too much salt to food, it can coarsen the texture and taste. It is important to note that 'coarsen' is a formal word and is not commonly used in everyday conversations. It is mostly used in academic or technical contexts.