the quality of being capable of igniting and burning
no I think you may need the word combustile
Neither. Argon is chemically inert. It is neither flammable nor combustible.
Batman's notable enemies are The Joker, The Riddler, The Penguin, Bane, The Scaregrow, Harley Quinn, The Mad Hatter, Mr. Freeze, Poison ivy, Ra's al Ghul and Two-Face however other villains that would include all of the official Batman mythology would include ones such as Abattoir, Amba Kadiri, Amygdala, Scorn, Dr. Falsario, Mister Bygone, The Professor, Wolf-Spider, Brute, Volt, Fishnet, Malicia, Mister Toxic, Mr. Combustile, Emperor Blackgate and Imperceptible Man.
Combustible fabrics can catch fire and combust, unlike the latter.