Questionary a. : Inquiring; asking questions; testing.

Questionary n. : One who makes it his business to seek after relics and carry them about for sale.

Example:
In Criminal Justice studies, What is the best research topic i can do a Questionary/Survey on? Good Questions ?

Taxonomy
questionnaire, respondent, Questionnaire construction, free encyclopedia, Food frequency questionnaire, open-ended question, intake, closed-ended questions, ended question, scales, polytomous, diet, assessment, vitamins, search, research instrument, prompts, gathering information.

Defination from the web:
questionnaire is a research instrument consisting of a series of questions and other prompts for the purpose of gathering information from respondents. ... The questionnaire was invented by Sir Francis Galton. ...