| Protonym | protonym |
| Proton | proton |
| Prototyp | prototype antetype prefiguration preliminary model |
| Pronom | pronoun |
| Proteom | proteome |
| Protium | protium |
| Protolyse | protolysis |
| proto- | proto- |
| Photon | photon |
| Metonym | metonym |
| Antonym | antonym |
| Kryptonym | cryptonym |
| Retronym | retronym |
| homonym | homonymous |
| Homonym | homonym |
| Choronym | choronym |
| Holonym | holonym |
| Paronym | near-homophone |
| Patronym | patronym patronymic |
| Toponym | toponym |