A large natural stream of water flowing in a channel to the sea, a lake, or another such stream.

A metaphorical term used to describe a continuous flow of something.

प्रवाह

English Usage: The river of time flows relentlessly forward.

Hindi Usage: समय का प्रवाह निरंतर आगे बढ़ता है.

A prediction or estimation of future events, especially weather.

An estimate or prediction regarding developments in a specific area.

अनुमान

English Usage: The economic forecast suggests a growth in GDP next year.

Hindi Usage: आर्थिक अनुमान अगले वर्ष जीडीपी में वृद्धि का सुझाव देता है.