"Burning house" is an active adjective. But i cant figure out how is that -ing form in burning house make the word as an active adj. How can we differ burning house and burnt house..
We can speak about participles here. There are different forms but we meet only two of them in your question. They are "burning " which is Present Participle and "burnt " which is called Past Participle.
Present Participles express actions in progress. "Burning " actually means "on fire".
Past Participles have passive meaning and that of a finished action. "Burnt " means that the process was completed and the house doesn't exist any more.
Burning and burnt are both adjectives used in front of the noun house. You can say that the former is active, but the latter is not.
When you use the phrase "a burning house", it means a house that's still burning or on fire, whereas a burnt house is a house that's already damaged by burning.