Adjective

1. Producing abrasion; rough enough to wear away the outer surface.
2. Being rough and coarse in manner or disposition.

   An abrasive person can grate on one's sensibilities.

   Despite her proper upbringing, we found her manners to be terribly abrasive.

Noun

1. A substance or material such as sandpaper, pumice, or emery, used for cleaning, smoothing, or polishing.