Explanation:
शिखर सम्मेलन
summit, summit conference
सम्मेलन
summit, Gathering, palaver
shikhar sammelan
Answer:
summit=ऊँचाई,शिखर
Answer:tali
Atlis incorrect.
Echo correct.
Jigantic incorrect.
Teritory incorrect.
Answer: Dreamlike
This doesn't make sense elaborate please