| Share | Phrase |
|---|
| 33.71% | lining [does] wear down |
| 16.72% | wear down pad [perform operation] |
| 14.42% | friction [does] wear down |
| 12.82% | wear down lining [perform operation] |
| 11.08% | pad [does] wear down |
| 8.64% | wear down layer [perform operation] |
| 2.59% | not wear down |