An example of shlock is a room full of very poorly made furniture.
An example of something schlock is a very revealing shirt made out of low quality, see-through fabric.
Origin of schlock
- Possibly from Yiddish shlak apoplexy, stroke, wretch, evil, nuisance from Middle High German slag, slak stroke from slahen to strike from Old High German slahan
From American Heritage Dictionary of the English Language, 5th Edition