Absorption means soaking up water. Some materials soak up water and some do not.
Materials that soak up water are absorbent — like cloth, paper and a sponge. Materials that do not soak up water are non-absorbent — like plastic, glass and metal.
Remember
- Absorbent: cloth, paper, sponge — they soak up water.
- Non-absorbent: plastic, glass, metal — water stays on top.