1.nouna. A flowing together of two or more streams.
b. The point of juncture of such streams.
c. The combined stream formed by this juncture.
2. A gathering, flowing, or meeting together at one juncture or point
If by sinus cavities you mean the confluences of the sinuses, then Yes
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These would be found at the confluences of transport links.
The River Thames has multiple confluences. One such is the confluence of the River Thames and the River Darent at Dartford.
James L. Best has written: 'Sediment transport and bed morphology at river channel confluences'
The Kingdom of Kush or Kush was an ancient African kingdom situated on the confluences of the Blue Nile, White Nile and River Atbara in what is now the Republic of Sudan.
A River's Totality is the Sum of It's Confluences concluding in It's Effluent Path. All of those Effluent Paths are Repeatedly Giving Us negative environmental situations.
Some of the Features on the Amazon River things such as; Meanders; Ox bow lakes; Confluences and Tributaries
There is no such river as the Murray Darling. The Murray and Darling Rivers are two separate and distinct rivers. The Darling is a tributary of the Murray, so there is one confluence of these two rivers, and this occurs at the point now known as the town of Wentworth.
Paris was from the start commercial, a trading town whose ways were essentially opposed to the aristocratic principle. For traders, the site was ideal; a comparatively easy crossing-point on the great river that was the principal highway of the region, on an easily defensible island midway between the confluences of the Oise and the Marne. For the full story, see http://www.hgbservices.com/parihist.htm
Many towns start on hills because they are fortresses, the homes of warlike aristocrats round whom the common folk huddle for protection. But Paris was from the start commercial, a trading town whose ways were essentially opposed to the aristocratic principle. For traders, the site was ideal; a comparatively easy crossing-point on the great river that was the principal highway of the region, on an easily defensible island midway between the confluences of the Oise and the Marne.