Congestion

n.	1.	The act of gathering into a heap or mass; accumulation. The congestion of dead bodies one upon another. - Evelyn.
	2.	(Med.) Overfullness of the capillary and other blood vessels, etc., in any locality or organ (often producing other morbid symptoms); local hyperæmia, active or passive; as, arterial congestion; venous congestion; congestion of the lungs.

Noun	1.	congestion - excessive accumulation of blood or other fluid in a body part
	2.	congestion - excessive crowding; "traffic congestion" Synonyms: over-crowding

congestion - When the offered load of a data communication path exceeds the capacity.

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