Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
duschen
←
German
duschen
(derived)
←
French
se [[doucher]]
(derived)
←
Luxembourgish
Dusch
(mention)