questionnaire

As nouns the difference between questionnaire and sampling

is that questionnaire is a form containing a list of questions; a means of gathering information for a survey while sampling is the process or technique of obtaining a representative sample.

As verbs the difference between questionnaire and sampling

is that questionnaire is to survey using questionnaires while sampling is present participle of lang=en.

Questionnaire is a synonym of questionary.

As nouns the difference between questionary and questionnaire

is that questionary is a questionnaire while questionnaire is a form containing a list of questions; a means of gathering information for a survey.

As an adjective questionary

is inquiring; asking questions; testing.

As a verb questionnaire is

to survey using questionnaires.