descent vs onrush

descent

• A falling upon or invasion. 

• A particular extension of the idea of gluing. 

• A sloping passage or incline. 

• A drop to a lower status or condition; decline. 

• Lineage or hereditary derivation. 

• An instance of descending; act of coming down. 

• A way down. 

onrush

• An aggressive assault. 

• A forceful rush or flow forward. 

• To assault aggressively. 

• To rush or flow forward forcefully.