As nouns the difference between sagging and subsidence
is that sagging
is the act of something that sags while subsidence
is the process of becoming less active or severe.
As a verb sagging
The act of something that sags.
* 1969 , Sugar Technologists' Association of India, Proceedings
A manner of wearing pants or shorts below the waist, revealing some or all of the underwear.
- It was noticed that there had been saggings and bulgings in the trays.
The process of becoming less active or severe
* Bishop Warburton
A sinking of something to a lower level, especially of part of the surface of the Earth due to underground excavation or seismic activity or groundwater depletion
- The subdual or subsidence of the more violent passions.