It is said 和It says有何区别?

It is said 和It says有何区别?
It is said 和It says有何区别?

It is said 和It says有何区别?
it is said 据说
it says 它说

前者是据说,
后者
It says sth 这很能说明问题
It says that 则是指某个文书或故事或规定如此说

It is said 据说，后接从句，或者用It has been said也是同样的意思，但语气更强烈
It says，它说，后接从句，从句的内容必需是“It”说的（或书面规定的）

It is said 据说
It says：
It says in: 在...上写道，在...上说
It says on: 在...上写道，在...上说

前者是据说，被动， 后者是它说，，主动