The use of 'burn' as an adjective

Hi

Just got to know that we can also use ‘burn’ as an adjective. Could you please tell me which red word is better?

Can we also say?

Thanks for your input,

Tom

All your examples are fine, Tom. I’d just like to point out, though, that a scar is a mark left after a wound has healed, but a mark isn’t necessarily a scar – a recent burn mark may not leave a scar after healing.

Your third example is correct, too, only more specific.