Refuse is a verb meaning to indicate or show that one is not willing to do something.
As a noun, refuse refers to matter thrown away or rejected as worthless; trash.
Common usage examples:
1. She refused to answer the question (她拒绝回答问题)
2. The refuse was collected every Wednesday (垃圾每周三被收走)
3. He refused the offer politely (他礼貌地拒绝了提议)