Quizzer
Part of speech: noun
Definition: a person who quizzes or asks questions a person who takes part in a quiz
Tester
Part of speech: noun
Definition: A canopy over a bed etc.A person who administers a test, or a device used for testing.25 lashes, ie. strokes of a whip across a person's back as a punishment. (Reference: Robert Hughes, The Fatal Shore, 1987, paperback 1996 ISBN 1-86046-150-6, chapter 12.)A sample of perfume available in a shop for customers to try before they buy.