What is the difference between schedule and questionnaire?

The differences between schedule and questionnaire are:-

Schedule	S.N.	Questionnaire
A schedule is the list of upcoming events or actions.	1.	A questionnaire is the list of questions handed out to people needing answers.
It is the direct method for information collection.	2.	It is a type of non-contact method for information collection.
There is a person to person formal relationship.	3.	There is no person to person formal relationship.
This method can be implemented on both literate as well as illiterate class people.	4.	This method can be implemented only on literate class people.
This method is expensive and less time consuming.	5.	This method is comparatively cheaper and more time consuming.
Interviewer is biased or known in advance.	6.	Interviewer is not known in advance.
Embarrassing questions can be used.	7.	Embarrassing questions cannot be used.
The coverage area for collecting information is small.	8.	The coverage area for collecting information is large.
Any kind of doubt can be cleared on the spot.	9.	Any kind of doubt can be created and it is difficult to resolve.
Non response is usually very low	10.	Non response is usually very high.