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 eg:He was killed in the accident.

3. amount, number

amount后接不可数名词;

number后接可数名词 eg: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. eg:My family is a happy one.