From Mt. Vernon FR: Fire Retardant vs. Flame Retardant
Two of the most searched FR terms in Google are "Fire Retardant Fabric" and "Flame Resistant Fabric." Here's the difference between the two: Flame resistance is the characteristic of a fabric to resist ignition and to self-extinguish if ignited. Flame retardant refers to a chemical substance used to impart flame resistance. Simply put, flame retardant materials may be used to make fabrics flame resistant.