illness和disease的区别（illness）

1、名词 n. 1.患病(状态);身体不适[U]During his illness, John stayed indoors. 约翰在生病期间足不出户。

2、 2.(某种)疾病[C]I have never seen her since her father fell sick of a serious illness. 自从她父亲生重病后,我就再也没有见过她。