to go down below the surface of a liquid

to decline or decrease

गिरना या घटना

English Usage: Her spirits began to sink after hearing the bad news.

Hindi Usage: बुरी खबर सुनने के बाद उसके मनोबल में गिरावट आने लगी।

the act of sinking or the state of being submerged

डूबना या डूबने की स्थिति

English Usage: The sinking of the ship was a tragic event.

Hindi Usage: जहाज का डूबना एक दुखद घटना थी।