sorry this question does not make sense i can not help you!
Perhaps you meant what is bigger a river or lake?
or What is bigger than a river?
try searching other things to find what you want!
Tributaries.
Cor! There are thousands of rivers bigger than the Murray. Nile and Amazon for a start.
Rivers are bigger, tributaries "conTRIBUTE" water to the rivers. Multiple tributaries connect to a single river making the river larger.
Networks of rivers are tributaries that connect to rivers which also connect to bigger bodies of water.
Networks of rivers are tributaries that connect to rivers which also connect to bigger bodies of water.
Small streams flow into rivers and the rivers flow to bigger rivers.
Usually other bodies of water - other rivers, seas, oceans, lakes etc.
Rivers provide a pathway to drain all the excess precipitation that is not absorbed by the land or held in lakes. They run into bigger rivers and then, finally, into the ocean.
Rivers begin in high places, such as in a mountain or hill, as rivers always flow downhill. The river Severn, for example, starts in a boggy marsh in Wales. They also usually start in a bog, lake, marsh, etc.
Because in older times trade was done via boats therefore the bigger trade cities had to be near rivers so the boats could come up the rivers from the sea.
I am assuming you mean the rivers and rivulets that flow int a bigger river and contribute to its flow. In that case they are called tributaries. If you mean what are the rivers called when they flow into the sea, then they are called delta's or river mouths.
False most of the water is in the ocean . Lakes are smaller . Oceans are bigger