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Abrasion (Noun)

The wearing down of rock particles by friction due to water or wind or ice.

Nouns denoting natural phenomena.

The constant flow of water over the rock face caused significant abrasion, smoothing out the surface over time.
Glaciers are powerful agents of abrasion, wearing down the underlying rock as they move.
The abrasive action of wind-blown sand particles caused extensive abrasion on the desert rock formations.
The abrasion of the riverbed by the constant flow of water and sediment created a smooth, rounded surface.
The abrasion of the coastline by the pounding surf and wind-blown sand resulted in a dramatic change in the landscape over thousands of years.

An abraded area where the skin is torn or worn off.

Nouns denoting natural processes.

The hikers returned with multiple abrasions on their knees from sliding down the rocky trail.
The child's knee was red and swollen, a large abrasion covering most of the joint.
After the bike accident, the cyclist's elbow had a nasty abrasion that needed to be cleaned and bandaged.
The nurse carefully cleaned and dressed the patient's abrasion, applying a topical antibiotic to prevent infection.
The abrasion on the football player's shoulder was a deep one, requiring stitches to close the wound.

Erosion by friction.

Nouns denoting natural processes.

The repeated abrasion of the rocks by the constant flow of sand and pebbles smoothed out their rough edges.
The hikers' boots showed signs of severe abrasion from walking on the rough, rocky terrain.
The river's strong current caused abrasion of the shore, wearing away the soil and underlying rock.
The sandpaper's gentle abrasion removed the old paint and varnish from the wooden surface.
The glaciers' slow movement caused abrasion of the underlying bedrock, carving out deep valleys over time.