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
Article N 文章冠词
2. incident, accident
incident指小事件, accident指不幸的事故 traffic accident
He was killed in the accident.
Confident :be confident in sth sb self-confident by her self
3. amount, number
A number of students are coming out of the school= a lot of
The number of student is 200 …的数量
Amount of sth
