Impossible is an adjective, but when it preceded by the definite article the, it becomes a noun.
"It has become her lifeline. She said: “I never thought I’d end up in that position, standing for half an hour in the cold for food. I used to be on nearly £30,000 a year and I think, ‘How did I end up here?’"
The word cold is an adjective. However, in this context it comes after the definite article the. Question: Is it a noun?

