What is collection of data distinguish between interview schedule and questionnaire?

QUESTIONNAIRE SCHEDULE 1) It is generally through mail direct 2) cheap and economical expensive 3) no-response yes repondense 4) not clear identiy respondent 5) slow fast 6) no contact personal contact 7) literate and co-operative person illiterateperson can also understand 8) wider distribution dificulty 9) wrong information accurate information 10) more quality depends on honesty 11) no observation observation is done