iron rust; iron hydroxide
paying for one's mistakes; getting one's just deserts; suffering the consequences (of one's own actions); reaping what you sow; making a rod for one's own back
to become rusted together; to become rusted shut; to rust; to become (completely) rusty; to become rusty (of a skill or ability); to become less effective
rust-proofing; anti-corrosive
sword with rusted edge; useless sword
rust removal; removing rust; rust remover; rust-removing agent