| Firn | firn |
| firn | elderly |
| Firnis | varnish |
| Hirn | brain |
| First | ridge |
| Firma | firm company business |
| firmen | confirm |
| firnissen | varnish |
| Birne | pear nut bulb globe |
| Dirne | whore prostitute lass maiden |
| Stirn | forehead front |
| Zwirn | twine |
| Firmen- | corporate |
| Firmung | confirmation |
| Kafir | kafir |
| Kefir | kefir |
| Dirndl | dirndl beefy girl |
| Gehirn | brain mind |
| Firmgöd | godfather |
| Semfira | Zemfira |