ANSWER:

Tributary is a stream flow in to the large stream/river. And increase the water volume of the main river. Distributary is a strean /river which flows away from a large river.It decreases the volume of water of the main river.

In STRUCTURAL geology, an ANTICLINE is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of a anticline

In structural geology, a syncline is a fold with younger layers closer to the center of the structure, whereas an anticline is the inverse of a syncline. A synclinorium (plural synclinoriums or synclinoria) is a large syncline with superimposed smaller folds

A river delta is a landform created by deposition of SEDIMENT that is CARRIED by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or (more rarely) another river that cannot carry away the supplied sediment

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