Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
dräifach
←
German
dreifach
(derived)
←
Luxembourgish
dräi
(suffix)
←
Luxembourgish
-fach
(suffix)