Abrasive (adjective) مخرش، رگڑنے یا کھرچنے کی چیز

(of a substance or material) capable of polishing or cleaning a hard surface by rubbing or grinding.
Example: “the wood should be rubbed down with fine abrasive paper”
Slander (noun) تہمت، بہتان، بدگوئی

the action or crime of making a false spoken statement damaging to a person’s reputation.
Example: “he is suing the TV company for slander”