将下列单词按其所属类别分类。

tomato  drum  flu  ugly  protect  healthy  potato  humorous  follow  rebuild

violin  piano  cancer  sausage  headache  discuss  daily  guitar  cabbage  SARS

1. 疾病名称:                                                                                                

2. 水果蔬菜:                                                                                                

3. 形状特征:                                                                                                

4. 行为动作:                                                                                                

5. 乐器名称: