1. clothes, cloth, clothing
　clothes统指各种衣服，谓语动词永远是复数， cloth指布，为不可数名词 clothing 服装的总称，指一件衣服用a piece of, an article of
2. incident, accident
　incident指小事件, accident指不幸的事故He was killed in the accident.
3. amount, number
　amount后接不可数名词， number后接可数名词 a number of students
4. family, house, home
　home 家，包括住处和家人，house房子，住宅，family家庭成员. My family is a happy one.
5. sound, voice, noise
　sound自然界各种各样的声音，voice人的嗓音，noise噪音I hate the loud noise outside.
6. photo, picture, drawing
　photo用照相机拍摄的照片，picture可指相片，图片，电影片，drawing画的画