warn / worn [wɔrn]
warn – n. & v. – n. – a notice or something about to happen; v. – 1. protect; 2. admonish; 3. give an alarm; 4. caution
worn – adj. & v. – adj. – impaired by wear or use, exhausted; v. – 1. to waste away; 2. past participle of wear (1. carry next to one's body; 2. to bear or carry; 3. turn around into the wind; 4. tolerate, accept or agree; 5. damage or destroy by use; 6. drain the strength or energy)