ABRADE, ABRASION and ABRASIVE

ABRADE     əˈbreɪd   

To rub or scrape the surface of rock, skin etc

Memory key 

1. See it as a+bread what will you do before eating bread you rub it with jam or butter.

2. Seeing it as A+blade what will you can do with blade ? rubbing 

so abrade means rub.

ABRASIVE :  that can scrap or rub

ABRASION:  the effect of rubbing.

Example 

The machinery parts abraded due to heavy usage.