1. Engulfed in flames; being consumed by flames.
2. Consuming fuel; used in combination.
3. Intensely hot.
4. Of immediate import.
5. Producing or having a painfully hot sensation.
Man loves company — even if it is only that of a small burning candle.
Source: Tatoeba
For example, a question about politics, something like, "Which is worse: book burning or flag burning?"