Earth & Nature
Water & Air
How Things Are Made
Science Actions & Processes
Senses & Interaction
400

To wear or wash away slowly.

erode

400

Water or other liquid in the air or surface.

moisture

400

formation

something formed or made

400
The act of doming something again and again.

repetition

400

A touching or meeting of persons or things.

contact

500

Something formed or made.

formation

500

Very small bits or pieces of something.

particles

500

An arrangement of parts.

structure

500

erode

To wear or wash away slowly.

500

Able to be seen.

visible