Answer:
I am as hard as metal, yet as flimsy as glass. I shine like a star, yet I am only a rock. What am I?
I ask no questions but receive a lot of answers
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
I am constantly overlooked by everyone but everyone has me.
My snake-like body cracks and burns. I cause pain but pleasure too. What am I?
What language does a billboard speak?