| Noun | Verb | Noun | Adjective |
| communication | communicate | science | scientific |
| discussion | discuss | friend | friendly |
| government | govern | happiness | happy |
| invatation | invite | differness | different |
| development | develop | danger | dangeress |
| explanation | explain | use | useful |
| education | educate | help | helpul |
| decision | decide | specialty | specail |
| enjoyment | enjoy | care | carful |
| organization | organize | noise | noisy |
| improvement | improve | industry | industrial |
| employment | employ | ambition | ambitions |