Rubber eraser is a commonly used term for an object used for removing mistakes written in pencil. However, there are several other synonyms that could be used instead of this term. For instance, the term "rubber" can be replaced with "eraser," "scourer," or "correction tool." On the other hand, the term "rubber eraser" can be replaced with "pencil eraser," "lead eraser," "art eraser," or "drafting eraser," depending on the context. It's essential to know these synonyms as they can help you to communicate your ideas more clearly and effectively. Whatever the term you prefer, it is crucial to have a good eraser to avoid smudging and maintain neatness.