| -al | -ance | -ation |
| approval | appearance | examination |
| arrival | entrance | preservation |
| refusal | ignorance | |
| survival | performance | |
| -ion | -ing | -ment |
| construction | beginning | development |
| dedication | building | embarrassment |
| invention | engineering | excitement |
| medication | failing | improvement |
| obsession | feeling | treatment |
| operation | learning | |
| population | meaning | |
| protection | | |