| Nikolaus | Saint Nicholas Santa Claus Nicholas Nickolas Nikolas Niccolas Nichalas Nichelas |
| Nikolaustag | St. Nicholas' Day |
| Nikolait | Nicolaitan |
| Nikodemus | Nicodemus |
| Skolius | amphibrach |
| Filzlaus | crab louse pubic louse |
| Klaus | kloyz |
| Nikud | nikud |
| St. Nikolaus | Saint Nicholas |
| Nikita | Nakita Nikita Nykita Nykyta |
| Nikobaren | Nicobar Islands |
| Nikoletta | Nicolette |
| Nikosia | Nicosia |
| Nikotin | nicotine |
| Taikonaut | taikonaut |
| Akkolade | accolade |
| Kola | Kola Peninsula |
| Kollaps | collapse fainting syncope |
| Koloss | colossus |
| Bitola | Bitola |