| Flachmoor | fen swamp |
| Flachmann | hip flask pocket flask |
| Flashmob | flashmob |
| Lachmöwe | black-headed gull |
| Hochmoor | high moor moor moorland |
| Flachheit | flatness |
| Flachland | lowland |
| Flachdach | flat roof |
| Flachglas | flat glass plate glass sheet glass |
| Flachs | flax |
| Flachse | tendon |
| Fläche | surface area |
| flach | flat shallow |
| flachsen | joke kid wisecrack |
| lachsrot | salmon |
| Blackfoot | Blackfoot |
| Lachter | cord |
| Bachelor | bachelor's degree |
| Fachmann | specialist expert |
| Fachwort | technical term term |