Hearing Tom Lehrer using the term "motion picture" throughout an introduction (probably not a dated word back then) it shocked me a bit when he also used "flick". I thought flick was a super modern word for a film?
This doesn't shock me (no rudeness meant!) but that seems pretty obvious, "As slang for 'film,' it is first attested 1926, a back-formation from flicker (v.), from their flickering appearance." etymonline.com/ind...