| imagine | imagination |
| employ | employment |
| kind | kindness |
| fiend | friendship |
| short | shortage |
| child | childhood |
| free | freedom |
| identify | identification |
| appreciate | appreciation |
| argue | arugment |
| develop | development |
| exist | existence |
| defend | defence |
| sign | signature |
| please | pleasure |
| react | reaction |
| prevent | prevention |
| donate | donation |
| contribute | contribution |
| prepare | preparation |
| treat | treatment |
| involve | involvement |
| refer | reference |
| prefer | preference |
| interfere | interference |
| mix | mixture |
| fail | failure |
| frustrated | frustration |
| fascinated | fascination |
| embarrassed | embarrassment |
| amused | amusement |
| creative | creativity |
| anxious | anxiety |
| spontaneous | spontaneity |
| awkward | awkwardness |
| nervous | nervousness |
| angry | anger |
| worried | worry |
