| Jakobite | Jacobite |
| Jakobitin | Jacobite |
| Jakob | Jacob James |
| Jakobsweg | Way of St James |
| Jakobus | James |
| Jakute | Yakut |
| Takonit | taconite |
| Jacobi- | Jacobian |
| Jakobsstab | Orion's Belt bourdon Jacob’s staff |
| Jakarta | Jakarta |
| Jakobsleiter | Jacob's Ladder rope ladder Jacob's ladder |
| Jakutien | Yakutia |
| Dakota | Dakota |
| Lakonien | Laconia |
| Zakone | Tsakonian |
| Akolyth | acolyte |
| Zakopane | Zakopane |
| -phobie | -phobia |
| Aerobic | aerobics |
| Aerobier | aerobe |